How Did Peter Attia Get Ripped With Low Testosterone?

Peter Attia says the only purpose of fixing testosterone is to give someone the capacity to work harder, recover more from workouts, and experience more muscle protein synthesis. Extra testosterone with the same nutrition, no exercise, and time spent on the couch brings no benefits.

As an adult, his most extreme physique was at 38. A DEXA scan put him at 7% body fat, with a fat-free mass index of 23.2 to 23.3 kilograms per meter squared. He was huge, strong, and totally ripped while testosterone was in the toilet. He exercised about 26 hours a week, swimming and cycling, and was grossly overtrained. He looked like twice the man he is today, and he says today his testosterone is probably twice as high as it was then.

Giving testosterone alone does little. Attia says it probably helps insulin resistance without any other change, and he calls that a waste of the gift, which is the ability to do more work and capture the benefit through muscle protein synthesis.