The first thing that comes to mind is doing sit-ups. Sit-ups are really a good way to lose weight, which can not only reduce your stomach but also exercise your abdominal muscles. But sit-ups have a disadvantage, that is, they are easy to damage the cervical spine. I believe that many people will feel sore neck and deltoid muscle after doing sit-ups. Because sit-ups hold their heads with their hands, beginners and people with insufficient waist and abdomen often pull themselves up with their hands, which will damage the cervical spine and spine. Sit-ups are easy to get hurt, so what methods can exercise abdominal muscles? The answer is belly rolling. Abdominal curl is a derivative action of sit-ups, which is easier than sit-ups and can exercise abdominal muscles without hurting cervical vertebrae. There are many variants of abdominal curl, which can stimulate abdominal muscles from multiple angles to achieve better exercise effect.