1 You are not because the dumbbell is not heavy enough, but because it is a little heavy for your current strength. I want to make it clear to you that what beginners need to do for the first time is not how much force they can lift at a time, but to do their movements in place and experience the strength of their muscles or muscle groups. For the simplest example, sitting down with a rope is an action to exercise the back muscles, but if we blindly pursue weight and ignore this action, whether it is standard or not, we can easily use our shoulders, that is, deltoid muscles. Finally, we didn't feel anything in our backs, and the deltoid muscles didn't work. Therefore, in your current situation, you should first lose weight appropriately. You can search related action videos or pictures to make every action as standard as possible, and feel that the muscles we practice are gradually gaining weight.

Generally speaking, it is normal to exercise 1- 1.5 hours every day. Maybe you are still in the primary stage, and your strength and endurance are still average, so it is normal to say that you are tired after practicing for a period of time. After correcting the first point I said, it should be improved to take a break of 3-5 minutes between each group's movements and not more than 10 minutes between each movement.

I suggest not to think about these things for the time being. I'm also using these things, but the effect is not as good as they say. God may vary from person to person. In the early stage of fitness, you can adjust your diet and eat more nutritious and high-protein foods to achieve the goal of muscle gain. After all, protein powder is also purified in food.

Finally, I wish you an ideal figure as soon as possible.