Methods: Lie flat on the hard bed, and put your hands flat under your hips.
Bend your legs, put your knees close to your chest, then straighten your legs and lay them flat. Repeat.
Note: during the whole process, keep your toes straight, don't use force on your arms, just stop doing it by abdominal strength.
Can tighten the abdominal muscles.
There will be a bottleneck in losing weight, and it is necessary to assist abdominal massage to make fat (fat) soft and easier to consume.
Drink plenty of water to eliminate toxins and promote metabolism.
Eat less carbohydrates.