Many pre-workout supplements have caffeine. It can boost performance in some sports, but too much can cause overheating and heart issues, doctors say.

Many pre-workout supplements have caffeine. It can boost performance in some sports, but too much can cause overheating and heart issues, doctors say.

Jillian Michaels told TMZ on Tuesday morning she may file a lawsuit against Netflix for making what she says are false claims in a new docuseries on “The Biggest Loser.” ...

For many pre-workout supplements, the answer is: mostly caffeine. Wilson says studies have shown that caffeine can “support perceived energy levels, endurance and strength performance ...

Caffeine, the most widely used “drug” in the world, has been shown in study after study to help athletes run faster, lift more, bike harder, and jump higher. Here are the best ways for ...

How much caffeine is in these common drinks (12 oz.), according to the FDA: Decaf coffee: 2 to 15 mg Green tea: 30 to 50 mg Soft drinks: 23 to 83 mg Matcha: 35 to 130 mg Black tea: 25 to 48 mg ...

Supplements: The Problem with Science Introduction to Supplements The serious caveats to consider with supplements Food and Drugs Administration Health Canada Reference 1. Bangsbo J, Jacobsen K, ...