Recently, the volumes of sexually dimorphic brain structures in transgender women were found to change and approximate typical female brain structures when exposed to estrogen concomitantly with androgen deprivation over a period of months, suggesting that estrogen and/or androgens have a significant part to play in sex differentiation of the brain

but here’s your cheat sheet to higher T. • Lift heavy weights. • Do intervals. • Practice sprints and work your lower body. • Supplement with Vitamin D (at least 300 IU/day). • Don’t smoke. • Supplement with zinc. • Sleep more than six hours per night. • Eat more protein. • Do squats and deadlifts. • Use shorter rest periods in the gym. • Take fish

may be that falling testosterone levels lead to reduced motivation and activity, this in turn reducing the sleep load