Your body temperature is lowest during the night. When your asleep your heart rate slows down... So when your heart rate slows down your not pumping a lot of blood through out your system. But of course it is pumping enough blood to keep you working and alive. So when little blood is being pumped your body temperature cools down. ** When your deep in your sleep **
This kinda sounds confusing, BUT I hope you get the point xD
Honestly life has many challenges but during life we expect much, like having a great life. I think that the statement doesn't because of things that may go on in my life.