No. 8: “press”
This exercise promotes the formation of press cubes and pumps the abdominal muscles well.
You need to lie on your back and raise your straight legs at an angle of 45 degrees. Raise your head and shoulder blades, put your hands behind your head. Bend your legs at the knees and pull them to your chest, clasping your knees with your hands. Then straighten your legs, and put your hands behind your head. The press must be tense.
For your information: Chewing gum provokes appetite, so it is better to refuse it so as not to overeat.