I think it is 5 hours but i don’t know
It makes the brain become a complex organ.
It's hard to examine brain because it can do multiple things at one time. Even when you are sitting, the brain is sending a signal to your lungs so you can automatically breathe. Many signals sent by brain that vital for life but we didn't aware of.
The stages in a problem should be acted as follows:
1. Gathering information.
2. Evaluating information.
3. Defining the problem.
4. Taking action.