English-Hanzi/When the human body is upright

When the human body is upright, the heart must push the blood circulation to overcome the gravity effect of the blood. Moreover, when people are exercising upright, the lower limbs are the main active organs, blood will be more distributed to the lower limbs, and the blood supply to the heart and above organs will be reduced. In contrast, the lower position of the heart and above when crawling is beneficial to blood circulation throughout the body and has a positive effect on the prevention and treatment of cardiovascular diseases.

人体直立时，心脏要推动血液循环，就要克服血液的重力影响. 而且人在直立运动时，下肢是主要活动器官，血液会更多地分配到下肢，心脏及其以上的器官血供减少. 与此相比，爬行时由于心脏及其以上部位位置的降低，有利于全身的血液循环，对防治心血管疾病有积极作用.