Answer:
The early central nervous system begins as a simple neural plate that folds to form a neural groove and then neural tube.
Explanation:
https://embryology.med.unsw.edu.au/embryology/index.php/Neural_System_Development
I'd say it's to set up a clear goal.
They tend to get hungry every four hours.
Hope this helps :)
They both exercise the body, and keep it moving. Both of them help you with weight loss and keep the body active.