Most popular
Pre-workout
Powder blends taken before exercise, usually with a lot of caffeine plus beta-alanine, creatine, citrulline and other ingredients.
- Why people take it
- Energy, focus and performance in the gym.
- What the evidence says
- Caffeine and creatine have good evidence for performance; many other ingredients do not. Doses in blends are often not listed clearly.
- Be careful
- Some products have 300 mg of caffeine or more a serving: avoid with heart problems, high blood pressure, anxiety or in pregnancy, and not late in the day. Beta-alanine causes harmless tingling. Some products have been found with banned stimulants.
Other most popular
Common questions
What is Pre-workout?
Powder blends taken before exercise, usually with a lot of caffeine plus beta-alanine, creatine, citrulline and other ingredients.
Why do people take Pre-workout?
Energy, focus and performance in the gym.
Does Pre-workout work?
Caffeine and creatine have good evidence for performance; many other ingredients do not. Doses in blends are often not listed clearly.
Is Pre-workout safe?
Some products have 300 mg of caffeine or more a serving: avoid with heart problems, high blood pressure, anxiety or in pregnancy, and not late in the day. Beta-alanine causes harmless tingling. Some products have been found with banned stimulants.
Sources and further reading
Last reviewed 31 October 2026. Written by Satya Babu.
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