As Zhang Chengyu gets older, his muscles will gradually decrease. Even if you don't eat much, you may get fat gradually because of the continuous decline of basal metabolism. Therefore, regardless of men and women, simply exercising muscle strength is an important step against aging. The Japanese fitness instructor even pointed out that among many muscles in the body, the abdominal muscles may lose faster, so he recommended a simple movement to help exercise the abdominal muscles and help us avoid the rapid loss of muscle strength and maintain a good metabolism! Abdominal muscles are easy to lose quickly, and simple exercise can maintain muscle strength. MAMI, a Japanese postpartum body shaping expert and personal body shaping coach, said that people's muscles will peak in their twenties and then gradually decrease with age. Not only that, when women enter menopause at the age of 45, they will accumulate fat more easily due to changes in hormones in their bodies. MAMI stressed that although aging gradually reduces the muscles of the body, the degree of muscle loss in different parts is actually different. For example, upper body parts such as arms are parts where muscles are not easy to reduce, while relatively speaking, parts that are rarely used such as abdominal muscles are often quite significant. When the muscle mass of these parts is greatly reduced, the metabolism will also decrease, resulting in problems such as abdominal bulge. Mori Jun-hyun, a well-known Japanese body-shaping expert, also said that the less used side abdomen tends to accumulate fat or relax with age, so it is suggested to actively exercise the abdominal oblique muscles, which will help maintain the body curve and prevent obesity. Professor Ishii Zewai, a professor of physics at Japan Women's Sports University, also pointed out that because abdominal muscles are not often used, the effect of exercise is often more significant, which is expected to help effectively improve muscle mass, increase energy consumption and easily lose weight. 1 Action helps to exercise abdominal muscles and help to lose weight.