Convenient timer for sports

The timer starts after the START button is pressed.
There are three modes: preparation, work, rest.
When the timer is started, the state of training begins immediately, and then - the state of work with intermediate states of rest.
The duration of each mode can be changed in the settings.
This timer is perfect for both home use and workout in the gym. It can be used for training with weights, stretching, boxing, training for MMA and training for intensive interval training. Regulated approaches to learning high and low intensity, as well as setting intervals between them.