For example, if you don't master the time and weight of dumbbells, there will be two situations: the dumbbells are too heavy, and the arms will not only have muscles, but also become thicker. If the dumbbell is too light to guarantee the practice time, it will have no effect.
My personal experience is that it is not only very simple without dumbbells, but also anytime and anywhere. You can practice at any time, whether watching TV at home or during work breaks. Don't worry about the weight. And it works quickly. You can see the obvious effect in one week, and it usually takes two weeks to see the obvious effect.
Method:
Take two new mineral water bottles, weighing 500ML, one bottle in each hand, and then make an upward movement, at least 150 strokes at a time, but not more than 200 strokes, because too much will lead to muscle growth. You can do it once or twice a day. I do it twice a day, once at 100, and the effect is really quick. Moreover, mineral water is very convenient to buy and the equipment is also very convenient.
Just be careful not to exceed 550ML and don't do too much. It is not feasible to lose weight immediately after doing 1000 exercises a day. Not only can you not exercise beautiful arm curves, but you will also make your arms thicker and grow muscles. Haste makes waste.
There is another method that works quickly, which is a little slower than mineral water bottles, but it is more convenient to take materials and exercise.
Method:
Take a towel, hold one end in each hand, straighten it, then lift it over your head, so lift it 200 times at a time, then lift it over your head, and do it left and right 100 times. The arm will also slim down soon.
I have used both methods, both of which are very effective and convenient, and I don't need to go to the gym.