How far can I practice dumbbells every day?

Your practice method is not correct. You don't need much exercise every time, and the weight of dumbbells doesn't need to be too big. It's better to hold it in your hand. It doesn't feel so heavy. Do an action 30 times at a time, change hands 30 times, or do both hands 30 times at the same time and rest for 5 seconds. Do 10 groups every day, which is 300 times. In this way, you can get effective practice. In addition, it is suggested not to practice only one forearm, but also the big arm, otherwise the thickness of the big arm and the small arm will be uneven in the future.