引用:
原帖由 jackcool0412 於 2009-6-10 09:11 PM 發表
i guess that s wrong.....
if u really trained up , ur body needs more oxygan..:smile_13:
I don't know much~ but people told me to do so before I go, I guess if you got better heart/lung function, it makes you more sustainable under that envoirnment.