Question

of the body’s mass but utilize 20% of its energy resources. Discuss the adaptive significance of this fact

Answer 1

For the average adult in a resting state, the brain consumes about 20 percent of the body's energy. The brain's primary function — processing and transmitting information through electrical signals — is very, very expensive in terms of energy use

20 percent

Your brain uses 20 percent of the oxygen and blood flow in the body and it never rests (even during sleep). It is thought that a yawn is your body's way of cooling down and “waking up your brain” by sending in more oxygen.