Abdominal muscle contraction: when lying on your back or prone, put your hands by your ears, raise your head, get as close as possible to your knees, contract your abdominal muscles, hold for a few seconds, and then put down your body. Repeat 10- 15 times.
Flat support: prone position, elbows on the ground, support the body, keep the body in a straight line, and keep the posture as long as possible.
Squat: when standing, your feet are slightly apart, your hands are naturally placed at your sides, then you slowly squat down while keeping your abdomen tight, and then you slowly stand up. Repeat 10- 15 times.
Running: Aerobic exercise can also exercise abdominal muscles well. Primary school students can choose to jog or run fast, running at least 2-3 times a week for 20-30 minutes each time.
Lift your legs vertically. The method of lifting legs vertically is simple. The specific actions are as follows: Step 1, lie flat on the bed or mat. Step two, straighten your legs and arms as much as possible, but your hips and back must be close to the bed or mat. Step 3: when lifting your legs and arms to the highest position, stretch your neck, then keep this action for about 20 seconds, and then slowly put it down. This action can exercise the muscles of the lower abdomen, and the effect is more obvious.
Note: Beginners should take their time and don't rush for success. You can practice according to your physical condition and actual situation. In order to achieve the effect of exercising abdominal muscles, it is suggested that primary school students keep exercising every day for more than 15 minutes. Stretch properly after each exercise to avoid uncomfortable symptoms such as muscle strain or fatigue.