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.
Smoking and Metabolism. Smoking does appear to speed up your metabolism, increasing calorie burn somewhat each time you light up. A study published in 2009 in Nicotine & Tobacco Research Advance Access  found that smokers had lower body mass indexes than both nonsmokers and ex-smokers, despite consuming more calories.