Goal and options: To improve your physical fitness,
output answer: exercise 3 to 5 times a week.

Goal and options: To wake up a sleeping body part that feels numb,
output answer: shake the limb slowly until it feels better.

Goal and options: Clean a hairbrush.
output answer:
You will need an old toothbrush, dish detergent and hot water. Add detergent to hot water and soak hairbrush. Once brush is wet, use an old toothbrush to clean the bristles. Let dry on towel.