Please choose the correct ending to complete the given sentence: Philosophy and Religion: [header] How to perform basic qigong techniques [title] Start with " palms up to heaven " : [step] From a standing position, keep both of your arms straight as you raise them above your head. Make sure your arms are at maximum extensions (as if you are reaching for something high above you). Lower your arms back down to your sides, keeping them straight all the way through and then repeat.

Ending1: [substeps] Perform the first 10 to 20 practice sessions at this speed : 20-15 kicks at a time. Then do the rest of the session with palms down and arms up. Ending2: This exercise intends to increase organ vitality, and especially stretch the abdominals before harder work. [title] " draw the bow " : [step] From a standing position, lower into a squat until your knees bend to around 90 degrees. Ending3: [title] Begin using " thumbs up " : [step] From a standing position, be sure your palms face forward. Now raise them slightly higher than their original positions. Ending4: " hand up ": from a standing position make one fist. Put all four fingers together, so they fit together as if they were the hands of someone who is clapping at you.

Answer format: ending1/ending2/ending3/ending4