Medically reviewed by Karina Tolentino, RD Key Takeaways Pre-workout supplements often contain caffeine and amino acids to boost energy before exercise.Caffeine in pre-workout can increase alertness ...

If you’ve trained your social-media algorithms to serve you even a little bit of fitness content, scrolling your TikTok feed might feel like wandering the aisles of a vitamin store. Workout vlogs ...

Let’s be real—you don’t need a pre-workout supplement to have a great lift or make progress in the gym. But on days when your energy is dragging or motivation is lacking, the right pre-workout can be ...