The first exercise: Hula hoop slimming principle: Turning Hula hoop to lose weight is a simple and convenient indoor slimming exercise, which can be played anytime and anywhere. Turning hula hoop can help intestinal peristalsis, help digestion and defecation, better assist slimming and take the initiative to help clear the garbage in the body, and achieve the effect of fitness. Advantages: effortless, simple, and good waist slimming effect. Disadvantages: Improper use and overweight hula hoop will excessively impact the spine and internal organs, causing injuries. Precautions: 1, rotate at a constant speed and moderately: it is not advisable to do hula hoop exercise too fast, which will increase the burden on the waist muscles and risk muscle strain and acute volvulus. In fact, the hula hoop action that is too fast is not as good as the action of swinging the abdomen at a uniform speed. 2. Perseverance: Only by doing exercise every day can we achieve the goal of perfect waist curve. If you turn the hula hoop for two or three hours today, but you are lazy and don't exercise tomorrow, fishing for three days and drying the net for two days, no matter how good the fitness and bodybuilding exercise is, it will not be effective. 3, avoid menstrual period: women in the middle and late menstruation, there may be corpus luteum cyst around the ovary, because the cyst is very fragile, if the abdomen is strongly squeezed, the cyst will rupture, and the accompanying internal bleeding may be fatal. The second kind of exercise: Yoga thin waist principle: Yoga exercises the waist by stretching and breathing. It can enhance digestive function, promote metabolism, improve visceral droop and tighten muscles. Advantages: healthy, in addition to thin waist, it can also relieve stress; If you are eager to lose weight and see the number on weighing scale decrease, you might as well choose more intense aerobic exercise, but if you want to keep fit for a long time, yoga is definitely the first choice. Disadvantages: thin waist is slow and needs long-term persistence; Practicing yoga requires professional guidance. Practicing yoga at home by yourself may cause harm to your body because of improper movements or operations. Note: 1. Practice after fasting or complete digestion. Generally speaking, it is three to four hours after meals, and you can practice after drinking liquid food or drinks for half an hour. Try to urinate before practice. After the exercise, you can eat after 30~40 minutes. 2. Morning is the best time for yoga practice. You should choose the time that is most convenient for you and try to practice at the same time every day. Before breakfast is the best time for yoga. 3. A good environment is very important. Choose a quiet, clean and fresh air place to practice and concentrate. The third kind of exercise: sit-ups and thin waist principle: sit-ups directly exercise abdominal muscles and promote abdominal fat burning. When the belly is small, the waist will naturally become thinner. Advantages: the effect of slimming waist is obvious. Disadvantages: Many people do sit-ups improperly, control the speed, or don't lose weight because of back pain. Note: 1, don't get up as soon as possible: Many people do sit-ups at home to lose weight, forcing themselves to complete the prescribed number of movements in one minute, thinking that this can strengthen their abdominal strength, but in fact it is easy to cause abdominal muscle strain. Too fast frequency can't improve the exercise effect. Only by slowing down the exercise rhythm properly can we avoid the physical discomfort caused by excessive fatigue and enhance the training effect of abdominal muscles. In order to achieve the goal of reducing abdominal fat, it is necessary to control the rhythm and avoid doing a lot of sit-ups from the beginning, which will lead to muscle pain. You can try to do it five times a minute at first, and then slowly increase it until it reaches about 30 times. 2. Keep your body balanced: try to control the direction of sit-ups, don't deviate from the straight line, and swing your body left and right. And the speed should be slowed down to exercise the control ability of abdominal muscles. It is best to feel the movement of abdominal muscles with your heart when you get up.