Jumping, including 25 minutes of daily jump roping with doubles and extensive plyometrics, was a significant part of Peter Attia's training from age 13 to 20.

“As one example, now something that I do a lot of is um like low-level jumping, right? And you're right, like sometimes I get really worried. I'm like, "Oh man, I don't want to have an Achilles rupture."”

“And that became one of the realizations was, oh, you've lost a lot of tissue pliability.”