In fact, this time can be controlled by yourself!

As long as the intensity of each exercise is enough!

Suppose you can do 1 do 12 in the dumbbell bending arm group, and there is no first set of standards for the 12 action after a rest for 30 seconds, then why not let yourself have a rest?

To put it bluntly, it's that simple!

I hope you will be satisfied with my answer!