As senior science editor for FLEX and Muscle
& Fitness I get tons of supplements sent to me every month, much to the dismay 
of the UPS and FedEx delivery guys. So I get to test-drive the best pre-workout supplements, fat burners, and protein products out there to determine which ones deserve my stamp of approval. This also allows me compare different brands to find the products that work best for me. But even if a specific pre-workout product, fat burner, or testosterone booster works for me, it may not necessarily work for you. After all, we all have our own unique biochemistry. But the trial-and-error process of finding the right products can get expensive. That’s why we developed the M&F Supplement Sample program. It allows you to test some of the best tried-and-true, as well as brand-new supplements on the market today.

FOR PRE-WORKOUT PRODUCTS I SELECTED THESE, WHICH
 ARE TWO OF MY PERSONAL FAVORITES:

CytoSport Monster Pump (Grape) - What I like best about this pre-workout product is that it contains the most critical ingredients you need before workouts in the doses you need them in. And you know this because CytoSport lists the dose of every single ingredient on the label.

MusclePharm Assault (Raspberry Lemon) - This pre-workout product really gives me the jolt and energy I need to get through my toughest workouts. And it provides the nutrients I need for greater strength and muscle gains, such as Con-Crēt, which happens to be one of my favorite forms of creatine.