FITT principle: Frequency, Intensity, Time, and Type.
They can increase their exercise from 3 days per week to 5 days per week. They can aim for a further distance during their exercise. They can increase the daily time from 20 minutes into 40 minutes. They can change the exercise from jogging to running.
This is true because when your are stressed and you eat bad it can add even more stress and maybe even a outbreak
The answer to your question is Option B (YOGA)..
Why, because when you term it it gives you energy!