Stop Walking, Start Lifting | The Science of Weight Training

Added: 2026-05-13

[00:00:00]Quick question. Which of these two people is more likely to have diabetes?

[00:00:04]If you picked the person on the left, you'd still be wrong about 43% of the time? Because the ICMR India B study, the largest diabetes survey ever conducted in India, covering 113,000 people across every state, found that 43.3% of Indians with a BMI under 25 are metabolically obese. normal weight on the outside, insulin resistant, visceral fat loaded, and pre-diabetic on the inside. The number of times people in India go, "You're looking healthy." Only to be told, "Yeah, but I'm still diabetic." is scarily large. India has 101 million people with diabetes. We are the diabetes capital of the world. And the crisis is not concentrated in people who look sick. It's hiding inside people who look healthy. The reason is that we've been measuring the wrong thing.

[00:01:00]BMI measures how heavy you are relative to your height. It tells you nothing about what the weight is made of. And for Indians specifically, BMI is close to useless because South Asians accumulate visceral fat, the dangerous kind packed around your organs at BMIs where Europeans and Americans are still metabolically healthy. An Indian man at BMI 23 can be more metabolically damaged than a European man at BMI 28. So if the BMI is the wrong metric, what is the correct one? Muscle mass. And the single most effective intervention to build muscle is not a drug, not a diet, not a supplement you see on social media. It's picking up something heavy and putting it back down and doing it again and again.

[00:01:59]Until the year 2000, medical science treated your muscles as mechanical equipment. Like they are your ropes and pulley of your body, things that move your skeleton around. Useful for carrying groceries and opening kisanjam bottles. And that's about it. Being visibly muscular was seen as something that a few testosterone filled young men took up after watching Salman Khan or Sanjayut movies and then giving it up once they got a job or got married.

[00:02:27]After which they just settled into the quintessential Indian middle-ag phenomenon of thin arms, potbellies, stick-like legs and pre-diabetes. Nobody thought being muscular was being healthy. If anything, muscles were almost always associated with steroid abuse. Something that models and Bollywood stars were known to do anyway.

[00:02:50]So, the public image of weight training was not great. Also, if you built muscle, readym made clothes also won't fit you very well. Even now, you tell old people in India you joined a gym, they will go, "Oh, so treadmill and cycling." If you say, "No, no, no, weightlifting." They will immediately go, "Why are you lifting weights and all? Are you planning to become a model or what? Then a Danish researcher named Bent Claron Pettison discovered something that changed the field.

[00:03:19]Contracting muscles secrete signaling molecules into your bloodstream.

[00:03:23]Hundreds of them. She called them myioines. Myo for muscle, kina for movement. And they don't just stay in your muscles. They travel. One of them irisin crosses the bloodb brain barrier and triggers production of BDNF brain derived neotrophic factor in the hippoc campus. BDNF stimulates the growth of new neurons. Let me say that again. Lifting weights grows new brain cells. A 2020 review in endocrine reviews confirmed that this muscle brain endocrine loop exists. Every time you squat with some weights on your shoulder, your brain is getting a purchase order for new neurons. Another mioine IL6 released during exercise has anti-inflammatory effects. Irisin also converts white fat, the storage kind, into brown fat, which burns energy through thermogenesis. Your muscles when contracted against resistance are reprogramming your fat tissue. The myioine list keeps growing. Catapsin B crosses the bloodb brain barrier, improves cognitive function, IL-15 stimulates fat oxidation, IGF-1, bone formation, and dozens more. The research published in the last decade has made this clear. Your skeletal muscle is the largest endocrine organ in your body. It is your pharmacy, not just ropes and police moving your bones. Like how a pharmacy only dispenses prescriptions when you walk in, myioines are released in response to contraction against resistance. Sitting on your sofa keeps the world's greatest pharmacy that you own permanently shut.

[00:05:11]To the nearly onethird of India's population that is either diabetic or pre-diabetic, your muscles are also your body's primary destination for blood sugar after a meal. When you eat rice or roti, that carbohydrate gets broken down into glucose, enters your bloodstream, and your pancreas releases insulin to push it into cells for use or storage.

[00:05:35]In pre-diabetes, this handoff stops working. Your cells stop responding to insulin's knock. The receptors are there, but the signal inside the cell gets garbbled. So, the glut transporters that should rush to the surface and let the glucose in. Just sit there doing nothing. Your pancreas notices the glucose piling up in the blood and shouts louder, pumping out more and more insulin to force the message through.

[00:06:01]For a while, this works. Then the pancreatic beta cells exhausted from decades of yelling at deaf cells start giving up and that's the moment pre-diabetes becomes full diabetes. Your blood sugar stays high and this is bad in many ways all of you are very familiar with because you see your parents and friends and relatives go through this every single day. Now consider this. Of all the insulin stimulated glucose that leaves your blood, 80% of it goes into your skeletal muscle, not the liver, not fat tissue, muscle. Defonso's landmark work at the American Diabetes Association established this. Skeletal muscle insulin resistance is the primary defect in type 2 diabetes. So it's simple. More muscle mass equals more glut transporters equals a bigger sink for blood glucose equals better insulin sensitivity. Think of it like parking spaces. Glucose is the car. Muscle cells are the parking lot. If you have a 200 space parking lot and 150 cars arrive, everything is fine. If your parking lot shrunk to 50 spaces, then 100 cars are circling your bloodstream with nowhere to go. That is insulin resistance. So in simple terms, even if you are diabetic, building muscle increases the size of the parking lot and that is great for you. But muscles have an additional superpower that no diabetes drug can replicate. When you contract a muscle against resistance, in other words, lift weights, glut transporters move to the cell surface through a pathway that is completely independent of insulin signaling. In simpler terms, weightlifting opens a back door. Even if the front door, insulin signaling is jammed shut, which is what happens in insulin resistance, the back door works fine. This is why exercise improves blood sugar control, even in people with advanced type 2 diabetes. No drug does this. The back door only opens when you use your muscles. Now zoom out to the Indian context and the numbers start to feel urgent. 101 million people in India with diabetes and 136 million with pre-diabetes. That's 237 million people whose glucose parking lot is either shrinking or overflowing. The prevalence ranges from 4.8% in Uttar Pradesh to 26.4% in Goa and it's climbing. Cities like Chennai and Delhi are above 25%.

[00:08:43]And remember the skinny fat phenotype.

[00:08:46]We Indians compared to Europeans have lower muscle mass and higher visceral fat at every BMI. And this is genetic.

[00:08:54]An Indian baby weighs about 800 g less than a European newborn with proportionally less lean muscle mass.

[00:09:03]The thrifty phenotype hypothesis says our bodies shaped by centuries of food scarcity are optimized to store fat efficiently and conserve energy that was useful when famine was common. It's catastrophic when you combine it with refined carbohydrates, sedentary desk jobs, and the total disappearance of physical labor from urban Indian life.

[00:09:25]The remarkably simple solution is to build muscle. Expand the parking lot.

[00:09:31]Open the back door for glucose. Open your pharmacy. A medium chubby person with low muscle mass is already at risk.

[00:09:39]Lose weight is the wrong advice for someone whose problem is they do not have enough muscle.

[00:09:49]I need to talk about this because the cultural bias in India against women lifting weights is doing serious biological harm. The fear is if I lift weights I will become bulky and look like a man. The biology however disagrees. Women produce between.1 and 1.8 nanom moles per liter of testosterone. Men produce 10 to 35.

[00:10:13]That's a 15 to 20x difference.

[00:10:16]Testosterone is the primary hormonal driver of large scale muscle growth. The technical term is hypertrophy. A woman doing barbell squats three times a week will get stronger, leaner, and more metabolically healthy. She will not wake up one morning looking like she belongs in a WWE patch. The women on Instagram with competition level muscle mass are either genetic outliers who have trained for a decade or they're using pharmaceutical testosterone, also known as steroids. Normal weight training in women with normal female hormone levels produces toned functional muscle, not bulk. Now consider what happens to women who do not lift weights. After menopause, estrogen levels drop.

[00:11:00]Estrogen is protective for bone. Without it, women lose 1.5 to 2.5% of their bone mass per year. Worldwide, approximately 40% of women over 50 will suffer an osteoporotic fracture in their remaining lifetime. Hip fractures in elderly women carry a mortality rate in the first year that is genuinely frightening up to 20 to 30% in some studies. One in three elderly women who break a hip never regain full independence. Nothing I'm saying here should be new to anyone. All of us have seen our parents and elderly relatives go through this time and again. All you have to do is walk into any international airport and see who uses the wheelchairs. It's almost always old Indian people and that too not very old either. Resistance training directly counteracts this. When you load a bone through muscle contraction, you activate osteoblasts, the cells that build new bone tissue. Meta analysis confirm that progressive resistance training at moderate to high intensity, 50 to 85% of your one rep max, two to three times per week, improves bone mineral density at the hip and spine. Write this down and scream it from a loudspeaker from your balcony. Walking does not do this. Yoga does not do this. The mechanical forces from walking or yoga are too low to trigger an adaptive bone response. You need to load the skeleton. Your muscles are writing prescriptions for your bones too. Myioines like iris and IL6 released during resistance training directly stimulate osteoblast differentiation.

[00:12:43]The pharmacy metaphors applies here. If a post-menopausal woman is lifting heavy three times a week, her muscles are prescribing bonebuilding drugs that no pharmacy sells. And I have not even mentioned the metabolic benefits.

[00:12:59]Resistance training in women improves insulin sensitivity, reduces visceral fat, improves cardiovascular risk markers, reduces symptoms of depression and anxiety through BDNF and serotonin pathways and improves functional independence into old age. The advice that Indian women should do yoga and go for a walk is stupidly harmful advice.

[00:13:23]Add weight training. It is the single most protective exercise a woman can do for her bones, her metabolism, and her independence in the decades after 50.

[00:13:38]Let's talk about the other end of the delusion spectrum. You will see a lot of fitness influencers online look amazing with six-packs. Some have eight packs also. Here is what most people don't realize. You already have abs. Every human with a functional abdomen does.

[00:13:54]The rectus abdominis is standard issue equipment. You were born with it. What you do not have is the ability to see them because sitting between your muscle and your skin is a layer of subcutaneous fat draped over everything like a thick bed sheet thrown over furniture. You can tell something's underneath. You just cannot make out the contours. Visible six-pack abs require roughly 10 to 12% body fat in men and 16 to 20% in women.

[00:14:22]That number has almost nothing to do with how much muscle you have built. It describes how little fat is sitting on top of the muscle you already have. You could train like a mad person for a decade, but at 20% body fat, your midsection will still look like a smooth torso. Drop that fat layer and the muscles that were always there suddenly announce themselves like furniture getting uncovered after a move. To maintain that level year round, you need to sustain a caloric restriction that for most people somewhere between uncomfortable and medically inadvisable.

[00:14:58]We're talking about weighing chicken breast on a kitchen scale, treating a single gulab jamun like a poison pill, and spending most of your waking hours feeling mildly hungry. This is not a sustainable lifestyle. This is a part-time job where the compensation is that strangers on Instagram think you look nice. It's not like you get you lift your shirt up and show off at college or office every other day.

[00:15:20]Essential body fat, the minimum your body needs to function is 3 to 5% for men and 8 to 12% for women. That fat cushions your organs, regulates hormones, absorbs fat soluble vitamins A, D, E, K and maintains your immune system. When body fat drops below essential levels, things break. In women, am amenoria, loss of menstruation, which means loss of bone density, fertility complications and hormonal chaos. In men, testosterone goes down, reduced libido, impaired immune function, chronic fatigue.

[00:15:53]Bodybuilders on stage, at competition are at their physiological worst. That carved out look is achieved through dehydration, extreme caloric deficit, and sometimes diuretics. They hold that condition for hours, not months.

[00:16:08]Instagram has created a visual language where six-packs abs equals health. This is wrong. A person at 18% body fat with 40 kg of lean muscle mass has more glut transporters, a bigger glucose parking lot, a more active myioine pharmacy, and stronger bones than someone at 10% body fat with 30 kg of muscle mass. The second person has visible abs but possibly a hormonal profile that is causing damage. If you want a metric that predicts mortality better than blood pressure, BMI, waist circumference, or six-pack visibility, it is grip strength. A 2022 meta analysis found that low grip strength is associated with higher allcost mortality, cardiovascular mortality, and cancer mortality across populations. The firmness of your elderly relative's handshake tells you more about their health than you imagine. Abs are decoration. Muscle mass is infrastructure.

[00:17:13]I'm going to now give you the single most important set of numbers in this video. A meta analysis published in the American Journal of Preventive Medicine in 2022, pooling data from multiple large cohort studies found that resistance training is associated with reduced risk of death from all causes, cardiovascular disease, and cancer. The dose response curve is remarkable. The maximum mortality benefit, a 33% reduction in all cause mortality, peaks at about 60 minutes of resistance training per week. That's less than 9 minutes a day. Increasing volume beyond 60 minutes doesn't add much benefit. You are not being asked to live in a gym.

[00:17:54]You're being asked to do less exercise than the duration of one TV episode per week. And combining resistance training with aerobic exercise, walking, running, cycling produces additive benefits, greater mortality reduction than either one alone. But if you do not have time and you had to pick one and I know this will upset the running and walking community, weight training has the edge for metabolic health, bone health and functional independence in old age. Old age is where this pays off most.

[00:18:28]Sarcopenia, age related muscle loss begins around age 30. Slow at first, then accelerating. By 80, you may have lost 30 to 50% of your muscle mass.

[00:18:39]Falls are the leading cause of injury related death in people over 65. What keeps you upright is not balance alone.

[00:18:46]It's the strength of your legs, the speed of your muscle response, the density of your bones. All of which are built and maintained by resistance training. The gym or your living room floor is as much retirement planning for your body as your mutual fund investments are. And trust me, weight training comes with no market risks.

[00:19:10]Some of you are going, "But Ashoke, I don't have time for a gym. There is no good gym near my house. I cannot afford a membership. I have kids and no time."

[00:19:18]Fair enough. So, let's build the pharmacy without equipment. And to do that, I'm going to bring in an actual expert, Sumaya Anoir. She's India's first woman certified as a strong body weight instructor, educating, motivating, and empowering through strength training and lifting weights. I want you to share this video not just with men, but with your elderly women relatives, your mom, your aunts, and your grandmom.

[00:19:49]>> In any plank, think straight line from head right up to your heel. Don't let your hips sag or pike up. Breathe.

[00:20:01]Holding your breath creates too much tension.

[00:20:05]Squeeze your armpits and squeeze your butt. That way you are engaging your entire core. For glute bridge, lie on your back, knees bent, feet flat on the ground. Drive through your heels and squeeze your glutes to lift your hips up. Don't hyper extend your lower back at the top. For single leg, keep your pelvis, keep the leg at your pelvic level. Don't let it drop to one side and gently squeeze your butt and lift your butt up. Again, don't hyper extend for lunge. Step back or forward, keeping your your front knee stacked over your ankle. Not caving in, not shooting forward past your toes. Lower your back knee towards the floor. Make sure you're moving diagonally up and down and not forward backward. Keep your torso as upright as possible and squeeze your butt and come up. Four rows. Hold the band with a firm grip. Elbows close to your body. Pull the band so your elbows go straight behind your back. Think about squeezing a pencil between your shoulder blades. Do not shrug. Meaning, do not lift your shoulders up. So, you're engaging your neck muscles. It is your back muscles that need to get engaged in this movement. For squats, feet hipwidth apart, toes slightly out.

[00:21:56]Push your knees in the direction of your little toe. Don't let knees cade in. Sit back like there's a chair behind you.

[00:22:06]Keep your chest up and your weight through your whole foot. Spread through your whole foot. For a pushup, place your hands shoulderwidth apart. slight in line with your shoulders. Spread your fingers, gripping the surface with the tips of your fingers. Pretend like you're opening a jar without moving your wrist. So, your elbows are pointed forward. Okay? Not while going down, point your elbows 45°, not flared out, not beneath to your side. Brace your core. Hold your stomach tight. Hold your glutes tight like someone is about to poke your stomach and you're protecting it. Lower your chest and come down in one line with your chest and your bottom to the surface. Do not reach with your neck or your head, but reach with your chest and come back to position in one line again.

[00:23:12]>> So here is the idea. Warm up for 5 minutes. March in place. Do arm circles, hip circles, and a few body weight squats at half depth. The goal is to raise your heart rate and get blood into your joints. Then take each exercise from planks, bridges, lunges, rows, squats, and push-ups. And start by doing three sets of the easiest variation. In each set, start with six to eight repetitions. Do this three times a week.

[00:23:46]Don't train every day. Train on alternative days. Your muscles grow during rest, not during exercise. The workout is the stimulus. Sleep and food are the construction crew. When six to eight repetitions feel easy, increase to 10 and then to 12. When three sets of 12 become easy for each exercise, move to the next harder version. When you can do the hardest version of every exercise quite easily, trust me, you will feel better than you have ever in your life.

[00:24:21]You will have more energy, better quality sleep, and you will not ask for a wheelchair at the airport like most Indians do the moment they hit 60 years old. The total time commitment on the days you do this, 30 to 40 minutes.

[00:24:36]Three times a week, that's 90 to 120 minutes a week. The highest quality scientific evidence says that you already get the maximum benefit at 60 minutes. You are already ahead. The first few weeks will be difficult. You will be sore. You will wake up stiff.

[00:24:55]That soreness is called DOMS, delayed onset muscle soreness. It peaks 24 to 48 hours after training. It's caused by micro tears in the muscle fibers and those micro tears are exactly what triggers the repair and muscle growth process. The soreness is the pharmacy placing the order. After all this, if you want to keep getting healthier, add weights, add harder resistant bands, and finally more days of training every week. And one more thing, protein. Your muscles need building material and Indian diets are chronically short on it. I've made many videos on it. Please watch them. The average Indian consumes 6 to8 g of protein per kilogram of body weight per day. For muscle maintenance and growth, you need at least 1.6 g per kg. That's a gap of roughly double.

[00:25:54]Please fill the gap. The cheapest highquality protein in India is still the egg. 5 to six rupees per egg. Six gram of complete protein each. Two eggs per meal, three meals a day, that's 36 g. Add your regular dal, curd, paneer, and you are within range. If you eat non-veg, 100 g of chicken breast has 25 to 31 g. No supplements needed, no powders, no gym, a floor, your body weight, 30 minutes, enough protein. That is the prescription. 43% of Indians with a normal BMI are metabolically obese. We are measuring the wrong thing, treating the wrong symptom and optimizing for the wrong outcome. BMI was invented in the 1830s by a Belgian mathematician named Adolf Callett who was studying the average man. It was never designed as a health metric. It was a statistical tool for populations adopted by insurance companies in the 20th century because it was easy to calculate and then exported globally without adjustment for the fact that a South Asian body carries fat and muscle in fundamentally different proportions than the European bodies it was calibrated on. We replaced one useless metric with another. Instagram replaced BMI with abs. neither tells you anything useful about your metabolic health, your bone density, your glucose clearance, your brain chemistry, or your ability to climb three flights of stairs at the age of 75 without someone's arm to hold. Your muscles are the largest pharmacy in your body. They write prescriptions for your brain and your bones, for your blood sugar and your fat tissue, for your ability to climb three flights of stairs at 80 without holding someone's arm. The pharmacy opens when you contract a muscle against resistance. It closes when you sit on a couch or when you just do walking or when you just do yoga. You don't need a gym to fill these prescriptions. You need a floor and your own body weight half an hour three times a week and enough dal paneer soya eggs or meat to rebuild what you break down. Start with wall push-ups, chair squats and table rows. Start wherever you are. The pharmacy doesn't care about your starting level. It only cares that you showed up. Lifespan is not important.

[00:28:18]Lifespan is how long you live. Health span is how long you live while being healthy. Focus on increasing health span. And the best way to do it is to build muscle.