You don't need a "fat burner" pre workout. You need a clean one that supports training intensity without undermining your deficit. PurePump® has only 25 calories per serving, zero sugar, zero artificial sweeteners, and includes ingredients like L-Carnitine (500mg Carnipure) and natural caffeine from coffee bean (200mg) that directly support fat metabolism — with 15 active ingredients packed into just 7.7g where every gram is active ingredient, zero filler.