I'm in pre-contest and will drink Glutamine with a little Crystal light between meals if i'm getting hungry. The best way to burn fat is through HIT and cardio...If your your going to do moderate to high intensity cardio Glutamine Select is great to sip during, so you hold onto the muscle while burning fat (Uplift is great pre-cardio). If you are a LISS user (lower intensity) the combo of Lean out, 7-Keto, Energy Reserve, and GH Factor on an empty stomach before morning cardio is flawless.