The muscle or group of muscles to the appropriate stretching exercise

Explanation:

If a stretch becomes painful, ease up to avoid injury or strain. Always remember to repeat stretches on both sides to ensure balanced muscles. The body is made up of eight major muscle groups. From head to toe, these groups include the shoulders, arms, chest, abdomen, back, butt, thighs and calves.

you would need to check her bp before and after her activity.