Calculators.
Single-purpose tools for the inputs that decide outcomes. Bookmark the ones you'll come back to.
Reconstitute.
Lyophilized vial. Bacteriostatic water. Insulin syringe. The three-input math that turns mg into clean units.
Protein intake.
Bodyweight, training load, age. Three knobs that decide the only macro that matters for muscle.
Caffeine.
Dose, time, your personal half-life. How much caffeine is still in you when you try to sleep.
TRT dose.
Weekly mg, ester concentration, injection frequency. The math that turns a script into a draw.
Glycemic load.
Glycemic index × carb amount. The honest metric for the blood-sugar impact of a real meal.
VO2 max.
12-minute run, one distance, one number. The single best predictor of all-cause mortality past 50.
Body comp.
Current weight and body-fat, goal body-fat. The recomp math — what you actually need to lose to preserve.