Avoid Overtraining
Overtraining elevates cortisol levels and lowers DHEAS, which negatively impacts the hormonal balance necessary for testosterone production. The DHEAS to cortisol ratio is a key indicator.
I feel like I can train casually 30 to 45 minutes every day and not overtrain. If I can do these outside, it's even better.
Overtraining will crush your testosterone just like undersleeping will.

