Pre-workout Side Effects: Is It Worth Taking? If you work out, you’ve probably heard about the slew of dietary supplements designed to boost energy levels, increase athletic performance, aid exercise ...

Pre-workout' is primarily made up of ingredients like caffeine and creatine, as well as amino acids, nitric oxide agents and ...

Medically reviewed by Patricia Mikula, PharmD Key Takeaways Most pre-workout effects peak within 30-90 minutes, but caffeine ...

Creatine helps increase power and muscle growth, while pre-workout offers quick energy and focus. Learn how they differ and when each supplement makes sense for you.

Finding the energy to exercise in the morning or after a long day is a common problem. This might explain why pre-workout ...

Research shows even a single dose of a pre-workout supplement containing caffeine before exercising can lead to small improvements ...