Diseases or other disorders can be passed down through your family so you need to know your families history to know if you are at an increased risk.
He must find his average heart rate zone
1. Plant hands directly under shoulders (slightly wider than shoulder width) like you’re about to do a push-up.
2. Ground toes into the floor and squeeze glutes to stabilize your body. Your legs should be working, too — be careful not to lock or hyperextend your knees.
3. Neutralize your neck and spine by looking at a spot on the floor about a foot beyond your hands. Your head should be in line with your back.
4. Hold the position for 20 seconds. As you get more comfortable with the move, hold your plank for as long as possible without compromising your form or breath.
90 pounds...................
