411 REFERENCE · Wikibooks
English-Hanzi/When crawling, the head often sags and blood flow increases
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
When crawling, the head often sags and blood flow increases, which can effectively improve blood circulation in the brain.
爬行时头部经常得以下垂，血流量增加，能有效地改善大脑的血液循环。