First, the Russian distortion. Russian twist is almost one of the most popular abdominal muscle training moves, but many of us did it wrong. Many people only turn their hands left and right when doing Russian twist, and their trunks don't turn at all, so all we do is muscle contraction. The correct action is to make the torso rotate with the elbow.

Second, push the wheel to roll your stomach. Pushing the wheel to roll up the abdomen is also a popular abdominal exercise. This exercise is similar to the last one. Many of us should rotate our torso when doing it, but many of us just symbolically shake our elbows and then lift our legs. Then you can only practice hip flexors, but you can't practice abdominal muscles at all. The correct action is that when we are doing it, we should get close, we can turn our torso and then tighten our abdomen.

Third, flat support. The difficulty coefficient of flat support is relatively low, and if we can finish flat support for more than two minutes, then this action is meaningless to us, and many people do not deliberately tighten their hips when doing flat support, so more training is only our hip flexors, not our core. The correct action is that we can hold our arms in front of us as much as possible, and when doing so, we can tighten our hips, so that we can effectively train to the core.

Fourth, lie on your back and lift your legs. Leg lifting on your back is actually a good exercise for the lower abdomen, but many of us simply lift our legs. Then in this case, we can only practice our hip flexors. Moreover, when we lift our legs through hip flexors, our lower back will leave the ground, and the pressure at this time will also cause our back pain. The correct action is to tighten our core as much as possible when doing supine leg lifts, and then feel the feeling of abdominal tightening, so as to effectively exercise the abdomen.