Please choose the correct ending to complete the given sentence: Health: [header] How to crack someone else's back [title] Stick to gentle methods used by chiropractors. [step] Other back cracking methods can be very dangerous and are not professionally recommended. Stick to the gentle massage method used by chiropractors to reduce the risk of complications.

Ending1: [substeps] Your chiropractor will moisturize the area and add soothing oils. If you are having difficulty relieving your problem, ask your chiropractor to limit the time he or she spends massaging the area. Ending2: [substeps] Using a gentle hand massage can be done under the influence of a wide variety of soaps and exfoliation agents. Chiropractors will find it easy to massage small areas, such as the legs, arms, armpits, head and stomach, while maintaining control over the contours of your back. Ending3: In some situations, this method may not be safe for both a health-conscious and aggressive chiropractor. In addition, you may experience some sharp or stinging electrical sensations when you try this method and may feel extremely ill. Ending4: Aggressive methods, like the bear hug or methods that involve lifting, have been linked to medical trauma. [substeps] The method outlined here is based on chiropractor guidance and is safer to perform.

Answer format: ending1/ending2/ending3/ending4