Lou Schuler is a National Magazine Award-winning journalist, a certified strength and conditioning specialist, and the co-author of popular diet and strength-training books. He has written and edited Men's Fitness, Men's Health, Men's Health Muscle, Men's Journal, and other magazines. Alwyn Cosgrove is co-owner, with his wife Rachel, of Results Fitness in Newhall, California. During his fifteen-year career as a strength and conditioning coach, Cosgrove has earned virtually every major certification, and worked with Olympic and national-level athletes, world champions and professionals in many sports. He's also a contributor to a variety of magazines and websites, including Men's Health and Men's Fitness.