See how many groups you can handle. For example, when you make a musical instrument, you set yourself the goal of doing 10 times in a row and then taking a rest! Then do 10 times in a row and have a rest. That is to say, you take 10 times as a unit and 10 times as a group! Specific, of course. How many times you want is up to you!

Generally, when practicing equipment, it is better to take 8 ~ 15 as a group and do 3 ~ 4 groups! Time is uncertain, it depends on you personally! Finish one group, rest for dozens of seconds, and then continue to do the next group when you feel physically restored! The reason is that only by intermittently stimulating muscles can we achieve the purpose of fitness.