Sitting cross-legged yoga is to slow down the blood flow to the lower limbs, make more blood flow to the upper body, stimulate and repair the functions of internal organs and brain cells, and make people feel relaxed, stable and awake.

If there is nothing wrong with your legs, you can sit still for more than half an hour. Can't bend over, hunch back)

Sitting cross-legged for a long time, slow blood circulation, legs will be numb. Knee pain may be caused by leg problems, such as arthritis and so on. I suggest that you shorten the sitting time and increase the number of times, which can also treat arthritis and some pain in lumbar spine and spine.