1: Because every muscle in the human body needs to rest for 48 hours after training, it is impossible to practice every day.

2. Every muscle will be torn after exercise, and then you need to supplement nutrition (protein, carbohydrates) and enough time.

Take a break and fix it.

3. Practicing dumbbells without feeling should not be the cause of the target muscle strength, or it may be that the selected weight is too small, so try to increase the weight.

Data expansion: Dumbbell, named because there is no sound during practice. Dumbbell is an auxiliary equipment for weightlifting and fitness.

The barbell is small. The weight of light dumbbells is 6,8, 12, 16 lb (1 lb = 0.4536 kg) and so on. The weight of the heavy dumbbell is 10, 1520,

25, 30 kilograms, etc. Dumbbells are favored by the majority of fitness enthusiasts.