little talk

I just read an article that said human need at least 8 glass of water everyday, If this condition failed to achieve, our body will absorb water from the nearest source..which is happend to be our blood, bloods that had less water will had less O2 and stuff..which mean less O2 for our brain..which is not good, to think of it..a rerely drink waters^^;, and to think of it again my memory is so bad..particularly on names....is it happend that....nah...that couldn't be true...are they?