When my dad was a 12-year-old kid in Red Bluff, California, circa 1928, part of the extended family was a man he knew as Uncle Jack Cotney. That they knew of, or he'd admit to, Uncle Jack had survived some 25 stand-up gunfights in his life.
Green tea is a fat burner that does speed up the metabolism, as far as energy drinks however they really speed up the heart not your metabolism. If you're looking for something that will speed up your metabolism there are better choices for that. Good Luck, Casey.
Drinking Water Revs Up Your Metabolism. Dehydration is your body's enemy. It slows bodily functions and metabolism. As a matter of fact, your metabolism will slow to conserve energy when you haven't had enough water to drink, as your organs can't and won't function as efficiently.