Do not worry, headache is a detox symptom and a part of the healing process. It means that your body is cleaning itself.

 

Apply the wet pack. It will give an instant relief in headache.

 

You can have your detox drink (coconut water, ash gourd juice, or any fresh vegetable juice) during 16-hour fasting. This way it would be easier for you to complete 16-hour fasting.