Muscle & Athletic Performance

A well-studied amino acid that increases muscle carnosine levels and consistently improves performance in high-intensity exercise lasting 1-4 minutes.

The most-studied sports supplement in history — strong evidence for strength and power, emerging evidence for cognitive benefits.

Sodium, potassium, and magnesium for hydration and performance — the science behind electrolyte replacement during exercise is well-established and uncontroversial.

A foundational mineral most people under-consume — strong for correcting inadequacy, modest (not magical) for sleep.

The most-studied protein supplement — strong and consistent evidence for supporting muscle protein synthesis, recovery, and lean mass gains when combined with resistance training.

A bioavailable choline source with some RCT support for cognition and power output — promising but the trial base is still thin for healthy adults.

An adaptogen with real RCT data for stress and cortisol reduction — not Grade A because trial sizes are small and long-term data is limited.

A methyl donor with solid evidence for lowering homocysteine and moderate evidence for improving power output and body composition during resistance training.

An amino acid that boosts nitric oxide production — good evidence for improving exercise performance and blood flow, though effect sizes are moderate and study quality varies.

Cold water immersion has decent evidence for reducing post-exercise soreness and inflammation, but the hype often outpaces what the science actually supports.

The body's most abundant amino acid with strong evidence for gut barrier integrity and immune support in stressed populations, but less clear benefit for healthy people.

Red light therapy (photobiomodulation) has growing RCT support for skin health and exercise recovery, though optimal protocols are still being defined.

A trace mineral with emerging but limited evidence for bone health and hormone metabolism — not yet established as essential in humans.

A medicinal mushroom with promising but preliminary evidence for improving oxygen utilization and endurance — most human trials are small and short.

A Nigerian shrub hyped on social media for testosterone support, but with virtually no human clinical evidence and notable safety concerns from animal studies.

A Southeast Asian herb with emerging but limited human evidence for testosterone support, stress reduction, and physical performance.