Thaum cov niam txiv laus lawm, ntau yam ua tsis yooj yim.Osteoporosis, ntshav siab thiab lwm yam teeb meem ua rau kev txav mus los tsis yooj yim thiab kiv taub hau.Yog tias siv squatting hauv chav dej hauv tsev, cov neeg laus yuav muaj kev phom sij thaum siv, xws li qaug zog, poob ...
Nyeem ntxiv