There are a multitude of different exercises to work your abdominal muscles. Weasyo has listed the most effective exercises for you.
1. Crunch
Abdominal crunches are certainly one of the most well-known abdominal exercises. They are very effective but are sometimes poorly executed. To avoid lower back pain, be sure to keep your lower back in contact with the floor . The lower back should not “dig in” during the exercise. To ensure correct support of the perineal floor, be sure to contract the muscles of the perineum during the exercise. This is especially true for women after childbirth as these muscles have become stretched. Also try to keep your stomach tucked in throughout the movement to contract the transverse abdominis muscle (deep abdominal muscle). This will strengthen the entire abdominal strap. Finally, you must be able to breathe throughout the exercise. All this is acquired gradually. Coordination is far from obvious. Do not hesitate to be guided by a professional (physiotherapist, sports coach) to correctly integrate each element.
2. Static hold with outstretched arms
This exercise is interesting because it also involves the deep muscles (psoas, deep spinal erector muscles). Keep the chest out, the shoulder blades should be pulled together in the back. Keep the lower back straight, it should not “round” or “sag”. Here too, keep the stomach tucked in and the perineum contracted to ensure good support for the lumbar region.
3. Sit-ups with straight legs: scissors
This one may seem relatively difficult at first but with practice it burns the abs a little less! As in the previous exercise, the muscles here are solicited in static contraction, in their role of stabilizing the abdomen-lumbar region. 
4. Abdominals stretched legs: small beat
In the same position as for the scissors, this time perform small leg kicks. The movements must be regular, small amplitudes but relatively fast. In particular on this exercise, the lower back (lumbar) tends to widen which significantly increases the mechanical stresses on the intervertebral discs. Do not hesitate to check your position regularly with the help of a mirror. Over time, the movement will become automatic.
5. Obliques
If you want to be complete in your abs strengthening, you will also have to work your oblique muscles. On this exercise, the right elbow touches the left knee and then vice versa. Be careful not to pull too much behind the neck to avoid neck pain.
6. Lateral sheathing
This exercise works the most lateral muscle fibers of the oblique muscles more. Hold this position for 20 seconds, rest a bit and repeat 5 times on each side. Be careful, your pool must not fall!
7. The board
photo of a woman who holds an anterior plank position on her forearms and thereby tones her abs effectively Finally, here is a classic cladding exercise: the plank. It strengthens the entire anterior muscle chain. At the level of the abdominals, the transverse of the abdomen is solicited in particular. Abdominal crunches are certainly one of the most well-known abdominal exercises. They are very effective but are sometimes poorly executed. To muscarinic receptors avoid lower back pain, be sure to keep your lower back in contact with the floor . The lower back should not “dig in” during the exercise. Also be sure to tuck in your stomach and contract the perineum.
