Does low testosterone affect muscle gains?
Yes, low testosterone turns muscles into fat leading to muscle loss.
Yes, testosterone levels can fluctuate. One can lose gained testosterone. Doctors do recommend testosterone replacement therapy (TRT) however, it is not recommended in all males.
They can exercise and eat well if they have low testosterone levels.
During muscle building, testosterone stimulates protein synthesis (anabolic effect) and inhibits protein degradation (anti-catabolic effect) and this in turn results in muscle hypertrophy.
Healthy men need (200-300 mg/wk) testosterone to gain muscle mass, strength, and power