Dumbbells are not bought according to their own weight. Dumbbell sets. A set of about 4 pairs of 6 pairs, but generally buy 1 pair, all buy 10 kg. Generally speaking, the back muscles are the heaviest, and those who exercise more in the gym will use 15 to 20 kilograms to practice.

Dumbbell, English dumbbell, is an auxiliary equipment for weightlifting and fitness, smaller than barbell. The weight of light dumbbells is 6,8, 12, 16 lb (1 lb =0.4536 kg) and so on.

1, long-term practice of dumbbells can modify muscle lines and increase muscle endurance. Regular heavy dumbbell exercises can make muscles strong, strengthen muscle fibers and increase muscle strength.

2, can exercise upper limb muscles and waist and abdomen muscles. For example, when doing sit-ups, putting dumbbells behind your neck with both hands can increase the load of abdominal exercises; Lifting dumbbells to do lateral bending or turning exercises can exercise the internal and external oblique muscles of the abdomen; Keep your arms straight forward and lift dumbbells sideways to exercise your shoulder and chest muscles.

3, can exercise lower limb muscles. For example, squat with dumbbells on one foot and jump with both feet.