Generally speaking, the lumbar fossa is the two concave fossa behind, is above the hip sacral vertebrae and lumbar vertebrae connection on both sides, also called the lumbar eye, most only fat and thin, proportionate young women, men may have, it is said that this accounts for only three percent of all women and men. If life, some people will appear bad spirit, easy fatigue and weakness, is a case of kidney deficiency, pay attention to eat more kidney tonic things, if necessary, medication. Pay attention to rest and keep warm, avoid overworking to avoid getting cold.