But perhaps the most desirable ingredient in the majority of pre-workout brands is the energy-boosting stimulant caffeine; "which is often included in very high amounts," says Uma Naidoo, MD, director ...

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 ...

This is read by an automated voice. Please report any issues or inconsistencies here. The pre-workout industry has absolutely exploded in recent years, and it has become a staple part of training ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Between Celsius, Prime, and Panera’s Charged Lemonade, talk of highly caffeinated drinks is everywhere, ...

Personal trainer Hayley Madigan isn't against supplements but there are some common ones she avoids. Madigan told Business Insider why she doesn't use products including energy drinks and protein bars ...

Fact checked by Nick Blackmer Combining protein powder with certain supplements can be safe and effective when dosed properly ...

That's not to say that all of the ingredients in pre-workouts are problematic. When taken within recommended daily doses, many pre-workout ingredients have proven health benefits. Vitamins, minerals, ...