The Secret Reason Running Actually Saves Your Joints

Added: 2026-05-05

[00:00:03]I thought running ruined my knees.

[00:00:05]But your office chair is actually grinding them to dust. See, your cartilage is a microscopic waterbed.

[00:00:11]When you jump, pressure [music] traps the water inside, bulletproofing your joints. But sit completely still, the waterbed leaks completely dry.

[00:00:18]>> [music] >> Now you're grinding raw bones together with 40 times more friction. Standing up just refills the tank. Speaking of biological leaks, click here to see why baby bees physically can't.