Pre-workout supplements increase energy, sharpen mental focus, delay muscle fatigue, and improve blood flow. Key ingredients like caffeine boost alertness, beta-alanine reduces tiredness during high-intensity sets, and citrulline enhances nutrient delivery to working muscles.Core BenefitsHigher Energy: Caffeine activates the central nervous system to fight off sluggishness.Better Focus: Nootropics or stimulants clear brain fog so you can concentrate on form.Greater Endurance: Beta-alanine buffers acid buildup to let you squeeze out extra reps.Stronger Pumps: Nitric oxide boosters widen blood vessels to rush oxygen into muscles.