How to optimize late-night workouts without disrupting sleep, improve memory through self-testing, enhance fertility with targeted nutrition, navigate perimenopause anxiety, and find your true passion—science-backed answers to 10 listener questions spanning fitness, brain health, reproductive medicine, and career development. Alpha-GPC (600–900 mg) increases alertness for evening workouts while modestly boosting REM sleep, but should be paired with 600 mg garlic to offset TMAO production and cardiovascular risk.