These products will restart the digestion cycle and you will again feel hunger pangs. Also, for health reasons, stay away from caffeinated beverages such as coffee, tea, or cola. Because caffeine is a stimulant, it has a more powerful effect on your nervous system when you abstain from food. This works both against the physical and spiritual aspects of the fast. Another key factor in maintaining optimum health during a fast is to limit your physical activity.
Short naps are helpful as well.
Walking a mile or two each day at a moderate pace is acceptable for a person in good health, and on a juice fast. However, no one on a water fast should exercise without the supervision of a fasting specialist. 1997 Campus Crusade for Christ .