Tips to strengthen a man’s waist and abdomen

　　Best midsection exercise posture:

　　Method: Lie on your back, bend your knees, and place your calves horizontally on the back of the chair. Your thighs should be vertical and your hips pressed against the chair. Slowly bend your body to form a 30-degree angle with the ground, and maintain the posture. Lie down slowly. For better results, straighten your legs.

　　Increase intensity:

　　Lift your legs. Lifting your legs directly in the air will make it more difficult, but more effective. Because the buttocks and leg muscles cannot provide auxiliary support, the abdomen, especially the upper abdomen, is forced to bear all movements.

　　Wrong abdominal exercise posture:

　　Quick straight-leg crunches. This will only exercise the buttocks muscles: the abdominals will be exercised very little, and the effect will not be significant. Because most of the time, you're borrowing momentum, especially if your arms are straight behind your head or you're using your arms to push your head up. Crunches also add a lot of stress to the lower half of your back.