Usher has washboard abs due to his intense focus on his ab circuit.

Usher has some of the best abs in all of entertainment. His workout routine puts tremendous emphasis on his core training. As demonstrated in Men’s Fitness, Usher trains with big time trainer Cliff “Hollywood” Boyce. Usher does an intense ab circuit. He does an exercise for 30 seconds, rests for 10 seconds, and then runs on the treadmill for two minutes. He repeats with the next exercise until he’s finished with each exercise.

This is a super vigorous routine that can really be the ultimate fat burner. Usher is doing high intensity training where he gives himself short rests in between super intense sets. Training like this can skyrocket your metabolism and will continue to burn fat long after exercise is over. Usher doesn’t stick with the traditionally long and continuous exercise that can produce a stress inducing hormone on your body and affect muscle growth. Instead, he does high intensity training, which really gives him that super impressive physique.

Usher is known by many as a true workout enthusiast. His appearance on the cover of Men’s Health is no surprise.

Usher tries to get five circuits in less than an hour. Here are some of his favorite ab workouts to do for his circuit:

Incline Resistance Ball Plank

In a push-up position, keep your hands on the resistance ball and your feet are on the floor (both shoulder-width apart). Balance and hold the position tightening your core. Planks are a popular isometric exercise, which involves contracting your muscles against stationary resisance. They are a great exercise to strengthen your entire midsection and to support your joints.

Prone Knee Tuck

In a push-up position, bring your right knee in towards your right elbow. Then switch sides. This also builds up your abs and can also help improve posture and strengthen the back muscles.

Alternating Medicine Ball Pushup

In a push-up position, keep one hand on the floor and one hand on a medicine ball. As you perform the push-up and lower your body, roll the ball over to your opposite hand. One hand is on the ball at all times. This really works on the stabilizer muscles in addition to the abs, chest and shoulders.

Upside Down Banana Crunch

Lay down flat on your stomach. Lift your hands and feet, ensuring they do not touch the floor. Roll over to your back, but as you roll over, come up to a crunch, making sure your hands and feet never touch the floor. This is an extremely difficult exercise to perfect but it is a total body killer. It will work all the stabilizer muscles and really hits the midsection.

Egg Roll Crunch

Lay on your back with your hands cupping your ears. Bring your knees to your chest and then roll up onto your shoulders until you bring your hips above your chest. You will feel this in the upper and lower part of your abs.

Source

http://www.mensfitness.com/fitness/workout-routines/get-ushers-abs