Most pre-workout effects peak within 30-90 minutes, but caffeine can stay in your system for up to 10 hours. Taking pre-workout later in the day may interfere with sleep, especially for people ...

Dietary supplements are not approved for safety or efficacy by the U.S. Food and Drug Administration (FDA), and ingredients and their amounts may vary. Be sure to talk to your doctor before taking any ...

Add Yahoo as a preferred source to see more of our stories on Google. Best pre-workouts to energize your workouts. I tried a range of pre-workouts while training for a half-marathon to see which ones ...

Add Yahoo as a preferred source to see more of our stories on Google. Some say pre-workout allows them to plow through their high-intensity fitness routines, even when they’re initially feeling “meh” ...

Which pre-workouts are best? Many people take pre-workouts before they hit the gym to help increase their energy and motivation. This can lead to better results and, potentially, help you reach your ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Whether you’re trying to lose weight, increase your energy, or stay mobile and pain-free as you get older ...

"Pre-workout supplements, which often contain high levels of caffeine and stimulant-like ingredients, have become increasingly popular among teenagers and young adults seeking to improve exercise ...

Pre-workout supplements promise to give you a boost before your gym session. They’re supposed to crank up your energy, help you push harder, and improve your endurance. But how do you know which ones ...

Sarah is an experienced writer and editor enthusiastic about helping readers live their healthiest and happiest lives. Before joining Forbes Health, Sarah worked as a writer for various digital ...