Respuesta :
The mandatory phases for a workout are warmup, training, and cooling down. The correct option is B.
What is warmup?
A good warm-up is essential for opening up the muscles which should last at least five to 10 minutes and for all major muscle groups.
There are some mandatory key phases for doing a workout. These are:
- Warmup.
- Training or conditioning workout.
- Cooling down.
Thus, the correct option is B.
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