Sit-ups can not only improve the elasticity of abdominal muscles, but also protect the back, improve posture and enhance the strength of abdominal muscles. It is especially effective for eliminating abdominal fat and avoiding low back pain.
The correct way of sit-ups: the body lies on the floor mat, and the knees are bent about 90 degrees (straight leg sit-ups will increase the burden on the back and easily cause damage to the back. ) Keep your feet flat on the ground. It is best not to fix your feet on the flat ground (for example, your partner presses your ankles with his hands), otherwise the flexors of thighs and buttocks will also join the work, thus reducing the workload of abdominal muscles.
You can also try crossing your hands behind your head, but each hand should be placed on the shoulder on the other side of your body. Never cross your fingers behind your head, so as not to strain the neck muscles when exerting force, and this will also reduce the workload of abdominal muscles. Use a slower speed, just like slow-motion playback. When the abdominal muscles pull you up, you have to exhale, so as to ensure that all the muscles deeper in the abdomen participate in the work at the same time. After the body is off the ground 10 to 20 cm, tighten the abdominal muscles, pause for a while, and then slowly lower the body back to its original position. When your back touches the ground, you can start the next cycle.
Make your head, shoulder blades, hips and heels stand close to the wall. Pay attention to the abdomen and buttocks for about 3 minutes. When you get used to this posture, you can balance your whole body without opening your eyes. If you are not used to this posture or feel uncomfortable, it means that your bones have been tilted or twisted. As long as we pay more attention and adjust in time, we can not only relieve the discomfort of shoulders and waist, but also improve metabolism. This free trick is also very effective for new mothers who have given birth to children.
In fact, there are many aerobic exercises that can be done at home, which are not limited to the above-mentioned exercises. In fact, when we are doing housework, we can also do some extra exercise subconsciously. For example, when we mop the floor, we can press leg press. At the same time, everyone should pay attention to safety issues when exercising at home.