Push Pre Workout

Around 3mg per kg of body weight reliably improves endurance performance and focus; count all caffeine sources across the day.

An electrolyte involved in muscle and nerve function; sweat losses are much smaller than sodium's.

A B vitamin involved in turning food into energy; supplementing helps only if your diet is short on it.

Involved in energy metabolism and making neurotransmitters; supplementing helps only if intake is low.

Needed for red blood cells and nerve function; especially relevant for vegans and vegetarians.

3g of glycine before bed has improved subjective sleep quality in small trials; lower doses are less studied.

Raises muscle carnosine, which buffers acid; around 3–6g a day for at least 4 weeks improves efforts of roughly 1–4 minutes. Harmless tingling is common; split doses reduce it.

Raises nitric oxide and may modestly improve high-intensity performance at 3–6g; lower doses are less studied.

The amino acid that most strongly switches on muscle protein building; about 2–3g per meal, usually from protein, is enough.

A branched-chain amino acid; it adds little on top of an adequate protein intake.

A branched-chain amino acid; it adds little on top of an adequate protein intake.