Pre-workout is a supplement people take before exercising to boost energy, focus, and workout performance. It often contains caffeine, and sometimes ingredients like creatine, beta-alanine, or citrulline to help with endurance, strength, and reducing fatigue.

Quick scoop

  • Energy boost: Caffeine is the main driver for many pre-workouts and can help you feel more awake and ready to train.
  • Better focus: Some formulas can improve alertness, concentration, and reaction time during exercise.
  • Performance support: Ingredients like creatine and beta-alanine may help with strength and endurance, especially in high-intensity workouts.
  • Less fatigue: Some people notice they can push harder or longer before feeling tired.

What it feels like

A lot of people describe pre-workout as a stronger, more “amped up” version of coffee: more energy, sharper focus, and sometimes a tingling feeling from beta-alanine.

Things to watch

Pre-workout can also cause side effects, especially if it has a lot of caffeine. Common issues include jitters, a racing heart, stomach upset, and trouble sleeping if taken too late.

Bottom line

If used carefully, pre-workout can help you feel energized and perform better in the gym, but it is not necessary for a good workout.