Organs function while we sleep?

These are some of the things that happen in our body when we sleep.Our brains are still very much at work when we sleep, after all who would be directing your lungs to breathe or your heart to beat, never mind directing numerous other tasks. While there is a “brain resting” stage, there is also a “brain activity” stage, where the brain is just as active as if you were awake. we can burn anywhere from roughly 400 to 900 calories sleeping for 8 hours (the exact number depends on your weight). The only time that our body don't burn calories is when we die. Our organs go through various healing and regenerative processes, that cannot always happen during the day.