Caffeine is a stimulant that increases alertness and reduces perceived effort during exercise, which can enhance stamina and endurance. Usage: Commonly found in coffee, tea, or as a supplement. It can help boost physical performance, especially in aerobic exercises. 2. Creatine How it works: Creatine helps supply energy to muscles during high-intensity, short-duration activities like sprinting or weightlifting. Usage: Available in powder or pill form, creatine can improve performance in strength-based and explosive exercises, which indirectly improves stamina by allowing for longer, more effective workouts. 3. Beta-Alanine How it works: Beta-alanine buffers lactic acid build-up in muscles during intense exercise, delaying fatigue and improving endurance, especially in activities lasting from 1 to 4 minutes. Usage: Available as a supplement in powder or pill form.

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