The interval should be 2-3 minutes. If the interval is too long or too short, the body is not in the best state and the best exercise effect cannot be achieved.
Such as: Birds-20 times in each group, 2 minutes apart in each group, * * * Do 3 groups (personally, how many groups to do depends on the type of project, generally 3 groups are better, and if you do too much, you will be particularly tired, especially when you go to the gym to do multiple projects. Mastering, experiencing and exercising by yourself is a long-term process)