Hello, practicing yoga is not only to stretch the hamstring, but also to get through the meridians of the legs, dredge qi and blood, dispel evil spirits and dispel cold, treat diseases and strengthen the body. Legs run the six meridians of human body, namely, liver, gallbladder, spleen, kidney, bladder and stomach. The function of yoga lacing is to remove the garbage in these meridians, thus playing a role in strengthening the body. In addition, a series of pathological changes caused by deficiency of qi are called qi deficiency. Anyone who is deficient in qi should eat food that has the function of invigorating qi, and should eat something that is flat, sweet or warm.

I hope I can help you, thank you!