1) busy study and work leads to less rest
2) entertainment to later time leads to less sleeping time
3) more cabon dioxide emmission due to consttruction,production,transportation,and so on leads to more deseases
1) busy study and work leads to less rest
2) entertainment to later time leads to less sleeping time
3) more cabon dioxide emmission due to consttruction,production,transportation,and so on leads to more deseases