Cement floor sleep on the human body will not be bad ..
Well, the cement will be back to the tide, the body is very bad, it is best to shop some newspaper cloth list
One is too hard, the second is too cold, although the heat is not felt hot, but open up the bow to the Ministry of the country Bao Baohua long sleep flooring, then the ground will invade the body, bringing a lot of diseases, because the body relax at rest, Pores open, the external harmful substances easy to enter the body.
