A decade and a half back a small but power-packed meal including boiled eggs or just a piece of banana would have been sufficient to boost our energy levels before a tough workout. But now everybody seems to be switching to pre-workout supplements. In fact these supplements have become immensely popular in the workout circuits in recent times. The Role Of Pre-workout Supplements They are supposed to improve your workout performance if you fuel up on them before hitting the gym. Some pre-workout supplements have carbohydrates and others come without this macronutrient and calories. However all of them have one