Lean Pre-Workout

Zinc supports immune function and tissue repair; athletes lose some in sweat. Helpful if your diet is low in it.

A trace mineral that supports antioxidant enzymes and thyroid function; most diets provide enough.

A trace mineral needed for iron metabolism and connective tissue; most diets provide enough, and high zinc intakes can lower copper.

A trace mineral marketed for blood sugar control and body composition; trials show small or no effects in healthy people.

Raises nitric oxide and may modestly improve high-intensity performance at 3–6g; 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.

Studied for strength and power; results are mixed.

Involved in fat metabolism; supplements haven't consistently improved endurance performance.

Needed for nerve signaling and cell membranes; evidence for performance benefits is limited.

An amino acid from tea that promotes relaxation without sedation; 200mg is the typical studied dose and may help sleep quality.

A natural source of caffeine; count it towards your total caffeine intake. Caffeine at around 3mg per kg of body weight improves endurance.

A mild stimulant from cocoa; weaker than caffeine, with little evidence for performance.

Black pepper extract that can increase absorption of some compounds, such as curcumin.

A plant compound that slows the breakdown of a memory messenger; evidence in healthy people is limited, and it shouldn't be taken long-term without advice.