Hammer your core and gain real-world strength with this cutting-edge fitness exercise. http://www.menshealth.com/fitness/deltafit-challenge-shred-your-gut?cid=soc_pinterest_content-fitness_july14_shredyourgut
For most men, a warmup involves a light jog and maybe some arm circles. "But if you want to take your training to the next level, that's not enough," says David Jack, mastermind behind The High-Intensity Body-Weight Workout. "A great warmup should turn on the power to your muscles so you can achieve peak performance in the gym."