I have never heard of that. To my understanding, the important elements are:
- Recovery doesn't take seven days.
- Squats target the biggest muscles.
- The biggest muscles produce the most testosterone, enabling you to make gains in other muscle groups more easily.
Given those and the constraints of safety and putting up the most weight you can for a decent amount of volume, you want to squat as often as possible. Not just for your legs, but because it enables you to do more elsewhere.
Molecular biology student here. I've never heard muscles producing (synthesizing) testosterone. It's synthesized in male testicles and adrenal gland. Care to elaborate what do you mean?
Maybe its just bro science, but most natty lifters talk about the importance of squats in terms of the additional testosterone released by growing the largest muscle group.
