Fitness is not a matter of one or two days, you should persevere. When doing dumbbell exercises, the two dumbbells are completely independent. If you don't train for a long time, you are likely to stagger when doing actions. Therefore, in all dumbbell training, in order to maintain balance and stability, the body will use all possible muscles, including all tiny auxiliary muscles and stabilizing muscles, which is very beneficial to our physical exercise. It can not only improve people's coordination and control, but also make you look more elegant and upright in life. If your muscles are asymmetrical on both sides, you can also do some unilateral training. Full Warm-up Because of the wide range of joint activities in dumbbell training, we should pay attention to full warm-up before training, including 5~ 10 minutes of aerobic training warm-up and stretching of main muscles of the body. Also pay attention to the choice of weight, especially in the first ten minutes of training, choose dumbbells with a maximum load of 55%~70%. Don't move too fast, it is important to control it, especially the stability of the waist and abdomen. Exhale when training strength, fall back and inhale. Training movements should avoid singleness, and overall balance is the most important. Dumbbell training can also help women's muscles to be more elastic, improve women's basic metabolism and achieve the effect of losing weight without rebounding. Dumbbell general cycle training (dumbbell weight is 3 ~ 5kg) Training method: the main exercise parts are half squat for 20~25 times, thigh, hip and arm flexion for 30~35 times, biceps brachii back rowing for 20~25 times, back arrow squat 15~20 times, thigh, hip, neck and back arm flexion for 20~25 times, and triceps brachii hard pull for 25 ~ 20 times. Do it three times a week. After 5 weeks, it can be increased to 4 cycles. If you really can't find dumbbells, you can use a dictionary, a water bottle or even two papaya instead. Fitness effect hunchback exercises can reduce fat, shape all parts of the body, especially the arms, shoulders and back, and also lengthen muscles and make the body slim. About two months, the effect came out. Suitable for a wide range of people, basically everyone can try.