LEAN BODY contains 40g of fast-release and slow-release proteins, to give you a sustained flow of vital amino acids for faster muscle growth and increases in strength. ALL-IN-ONE MRP - Forget other supplement pills and powders — you get it all in Lean Body : concentrated muscle-building nutrition in one delicious, easy-to-make shake. SCIENTIFICALLY TESTED - In an eight-week, doctor-supervised study, participants using LEAN BODY in conjunction with their exercise regimen gained, on average, 6.5 lbs. of lean muscle mass, and lost 14.4 lbs. of body fat. NO JUNK - LEAN BODY is free of maltodextrin, artificial colors, aspartame, preservatives and trans fats.