Muscle & strength

Two sessions a week covering the major movement patterns is enough to bend the curve. Muscle-strengthening activity tracks with 10–17% lower mortality, and the dose-response peaks early — around 30–60 minutes a week — so you do not need to live in the gym.

In this stackThe engine. Progressive overload across the major patterns, most sets taken close to failure, 2–4×/week.

The RDA of 0.8 g/kg prevents deficiency, not the same as optimal. If you resistance-train, benefits from added protein plateau around 1.6 g/kg per day. Hit a reasonable target across a few meals and stop optimizing the decimal places.

In this stack~1.6 g/kg/day, spread across meals. Above that adds little.

Eat mostly minimally-processed food, get enough protein and fiber, and let total energy intake match whether you want to lose, hold, or gain. The specific named diet matters far less than sticking to a decent pattern — adherence beats ideology, every time.

In this stackA slight energy surplus to build; enough whole food to recover on.

Protect a consistent wake time and enough time in bed before you touch a supplement. Move caffeine earlier, keep alcohol out of your sleep experiments, and screen for apnea if you snore, gasp, or wake unrefreshed. The pills are the last 10%, not the first.

In this stack7+ hours — muscle is built during recovery, not just training.

3–5 g/day of plain creatine monohydrate, taken any time, forever. It reliably improves high-intensity performance and lean mass alongside training, costs pennies, and has a deep safety record. Skip the fancy branded forms — monohydrate is the one that's actually studied.

In this stack3–5 g/day monohydrate. The one supplement with the evidence.

Caffeine reliably improves endurance, power, and alertness — it's the most evidence-backed legal ergogenic aid there is. Up to ~400 mg/day is safe for most healthy adults. The catch is timing: with a ~5-hour half-life, caffeine taken even 6 hours before bed measurably degrades sleep. Treat it as the drug it is — powerful, useful, and easy to mistime.

In this stack~3 mg/kg pre-training for output, if it doesn't wreck your sleep.

For men with genuine hypogonadism — symptoms plus repeatedly low morning testosterone — TRT can meaningfully improve symptoms, and the large TRAVERSE trial found it did not raise major cardiovascular events. But it suppresses fertility, thickens the blood, and requires monitoring. For a man with low-normal testosterone and fatigue, TRT is usually treating the wrong thing. This is a diagnosis-and-clinician decision.

In this stackOnly for diagnosed hypogonadism, under a clinician — not a physique shortcut for normal men.

These peptides do what they say — sermorelin and ipamorelin raise GH and IGF-1. What's missing is any evidence that doing so is good for a healthy adult. When growth hormone itself was tested in healthy older people, it added edema, joint pain, and glucose problems without proven functional benefit. Not FDA-approved for aging, and mostly a clinic/gray-market phenomenon.

In this stackMarketed hard for muscle; the anti-aging/physique evidence doesn't exist. Understand the risks before anyone touches this.