So engrained into our culture, it is easy to forget that caffeine is, in fact, a drug. The psychoactive substance is a stimulant that tricks your mind and constricts the blood vessels. It impacts the ...

Jillian Michaels slammed Netflix’s documentary Fit for TV: The Reality of The Biggest Loser and alleged that the claims in the film that she approved of giving contestants caffeine pills were lies.

Nutritionists share the best low-sugar energy drinks with 200 milligrams or less of caffeine for a boost to your stamina from brands like Uptime and Zevia.