Zhang Chengyu doesn't want to lie in bed when he is old, or he doesn't want to grow old with age. The most important thing is to maintain muscle mass and improve metabolism. In this regard, famous Japanese slimming doctors pointed out that maintaining muscle strength is not only a matter of getting enough protein, but also a matter of keeping exercise habits. He suggested that drawing "8" with both hands up every day can exercise many muscles such as abdomen, waist, back and arms, and it is easier to gain muscle and lose fat! Supplement protein, exercise muscle strength and prevent muscle loss. Takashi Toda, a famous Japanese weight-loss doctor who owns many weight-loss books, said that eating protein through diet helps to increase muscle mass and help to lose weight. However, it is not enough to supplement protein alone. It is also necessary to combine exercise habits to effectively increase muscle mass and reduce fat. Takashi Toda recommended a simple exercise that can be easily started without sports equipment and exercise habits. As long as you draw a figure of eight on your chest with your hand, you can help * * * exercise the oblique muscles of the abdomen and many muscles around the abdomen that are rarely used in daily life. In addition to the effect of slimming the abdomen and shaping the waist curve, it also helps to maintain the stability of the body and maintain the correct posture. In addition, it may also have the effect of relaxing bowels. Mori Jun-hyun, a well-known Japanese body-shaping expert, also said that the lateral abdomen is a place where it is easy to relax and accumulate fat. Exercising abdominal oblique muscles helps to eliminate lateral abdominal fat and maintain a beautiful figure curve. Professor Sawai Ishii, a professor of health science and physical science at Japan Women's Sports University, also believes that abdominal muscles are not easy to use, so it is easier to significantly increase muscle mass and basal metabolism by exercising abdominal muscles. In addition, Nakagaki, a Japanese personal fitness instructor, also said that the figure-eight gesture with both hands on the chest can not only exercise the abdominal muscles and waist, but also the scapula, back and arms, so it may also have the effect of slimming back and eliminating butterfly sleeve. Draw 8 characters on the chest with both hands to exercise muscle strength and prevent obesity. Stand with your feet shoulder-width apart and your hands straight forward. At the same time, imagine holding a ball with a diameter of 15cm with both hands. It takes 15 ~ 20 seconds to keep this posture. Draw a horizontal figure of eight in front of your body for 3 minutes and repeat it 3 times.