A new study suggests that if you follow this pattern — drink coffee first, then hit the gym — you are more likely to lose more weight. the study was published in the international journal of sport nutrition and exercise metabolism.
Researchers found that athletes who took in caffeine before their workout burned fifteen-percent more calories for three hours after they completed their exercise than those who did not. So how much caffeine do you need? They found that this effect kicked in for a 150 pound woman after roughly 300 milligrams of caffeine — that’s the amount in a 12 oz. cup of coffee. but before you brew a whole pot — there is the risk of overdoing it.
Dietitians say the maximum amount of caffeine that you should have for enhanced performance and with minimal side effects was just the equivalent of about 16 oz. of coffee.