Today everyone has something problem like disess many people has one problem which is pain in the leg that’s why they don’t no. But these is something they always sleep under the fan air that’s why the thing is when require then use but today people need 24 hours that’s why the problems came in human life. It is OK when the temperature is above 29 but under 30 I don’t think it is require 24 hours so need like good knowledge then we can save many disess and spent the happy life.Today life style is totally change people put the A.c that’s why day after day disess reach us very easy.