sentences:  Once the patient relaxes, her range of motion increases slightly.The repetition of alternating cycles of contraction and subsequent relaxation help the treated muscle improve its range of motion.Muscle energy techniques are contraindicated in patients with fractures, crush injuries, dislocations, joint instability, severe muscle spasms or strains, severe osteoporosis, severe whiplash injury, vertebrobasilar insufficiency, severe illness, and recent surgery.