lack of physical activity (sedentary job + sedentary entertainment) + shitty diet = lower testosterone lower testosterone = lower lean body mass (you gain tens

lack of physical activity (sedentary job + sedentary entertainment) + shitty diet = lower testosterone lower testosterone = lower lean body mass (you gain tens of pounds of muscle on TRT even without exercising) lower lean body mass = lower BMR. an average doughy 200 pound guy and a 200 pound athlete have vastly different caloric requirements.