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.
Increasing Metabolism. How metabolism can be boosted, and the effect of the body's muscle mass and heart rate on the burning of calories. Metabolism is the number of calories the body burns and is made up of three components: resting metabolic rate, physical activity and a smaller amount needed to process food.