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.
Exercise is a key ingredient to increase metabolism. The aerobic workouts burn more calories in the short term, and weight training builds the muscles that will boost your metabolism in the long run. During heavy physical exertion, the muscles may burn through as much as 3,000kJ (717 kcal) per hour.