Drinking strong coffee before exercising increases fat-burning, new study finds
> Subjects ingested 3 mg/kg of caffeine or a placebo at 8am and 5pm<p>3mg/kg is over 250mg of caffeine for an average weight man. Twice a day makes that 500mg.<p>An 8.4oz can of Red Bull contains 80mg of caffeine. They were giving these people an amount of caffeine equivalent to 6 cans of Red Bull. Not a perfect comparison because Red Bull contains other ingredients, but that's still a lot of caffeine. For another point of reference, that's 2.5 shots of 5 hour energy (200mg caffeine per bottle).<p>To top it off, the subjects were caffeine-naive, so they had no caffeine tolerance. They must have been feeling extremely energetic.<p>No wonder they burned more fat. I'm not sure this is going to translate to your casual coffee drinker or someone with a high caffeine tolerance.