Physical Benefits of fasting and prayer include these:

• Can Extend your life!
• Aids your body in eliminating toxins.
• Gives your organs a chance to rest.
• Can reduce back pain.
• Cleans your blood vessels.
• Helps to reduce cholesterol.
• Aid against obesity.
• Aids the immune system.
• Helps to oxygenate your body.
• Can also help with: allergies, alzheimers, eczema, asthma, infections, psoriasis, sinusitis, blood pressure and the list goes on. It is certainly worth doing!

Some people also claim that that fasting can benefit conditions like this:

• allergies
• asthma
• bladder disease
• bursitis
• hay fever
• high blood pressure
• kidney disease
• nervous exhaustion
• obesity
• poor circulation
• rheumatism
• schizophrenia
• skin diseases
• stress

Fasting can even be used as a successful treatment for:

• acne
• appendicitis
• arthritis
• colitis
• constipation
• epilepsy
• hypertension

And the list goes on. These bottom two lists are taken from the book: The Roots and Fruits of Fasting. P. 74-75