The body's potential for refreshment can strengthen your practice and give you a source of energy
"The body has all kinds of potentials that we rarely take advantage of because we don’t let the mind get quiet enough for them to show themselves. So give this potential — this potential for fullness, a sense of refreshment — some space; give it some time. You’ll find that it really can strengthen your practice and give you a source of energy that you can tap into whenever you need it at any time throughout the day." ~ Thanissaro Bhikkhu "Rapture" (Meditations6)