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Your schedules
Schedules are collections of workouts that you do in succession.
You can indicate how long you want to do each workout before jumping to the next. It is also possible to create a loop, so you always do the same workouts in succession, e.g. A > B > C > A > B > C and so on.
The currently active schedule will remain active (and be shown e.g. in your dashboard) till it reaches the last workout or till you deactivate it, if it is a loop.