Asking For A Friend: Can I Work Out Drunk? 

Unlike caffeine, which is a stimulant that has minimal calories and speeds up your metabolism, alcohol is a nervous system depressant that slows everything down, he explains. Ultimately, it can slow down your capacity to burn energy and add muscle mass. “It’s a lousy elixir for an efficient workout,” he adds blatantly. “While it might make the songs blaring through your smartphone seem sexier, it will do nothing to enhance your physical allure.”