1. The rear part of the hip should be raised. You can put a cotton pad or a thin pillow, so that you can straighten your waist naturally and avoid the disadvantages of slowly bending your back due to lumbar muscle fatigue during meditation.
2. The waist should be naturally straight. If the waist is not straight, the second pulse of Ren Du is not smooth, which is easy to form the problem of sleepiness.
3. The head is straight and the neck is straight, the jaw is miniature, and the tongue is against the upper jaw. Generally, after sitting down, you can put a mirror in front of yourself to see if your head is in an upright state and find the correct feeling of straight head and neck, so that you can automatically correct the imbalance and pulse in your body.
Extended data
Matters needing attention in cross-legged meditation
1. Single disk
Beginners of meditation must start with a single set. If there is no abdomen, meditation will only be painful. Therefore, if the meditation time can be extended, it is necessary to practice field sheet shaping. If Tian Dan's Qi is available, meditation can gradually get better. If the gas is not enough and the feet can't be well conditioned, the scholar can lie flat and tie three health belts on his legs. After an hour or two, the gas in his feet will come up.
2. Double disk
After meditation on the road, the double dish is conducive to the flow of qi from Dantian to Du meridian, and then back to Dantian through Ren meridian and spread to the lower dish. When you double-dish, your knees should be able to land, and your posture is stable and correct. If one knee does not touch the ground, it means the height of pelvic cavity and the length of left and right feet. The hip and femur need further adjustment.
References:
Baidu Encyclopedia: Meditation