Answer:
Restorative theory
Explanation:
The restorative theory is the theory that restores our tissue and prepares us for the next day. It works when the g lymphatic symptoms flush from the brain during the sleep night. It releases adenosine chemical that is responsible for increasing the level of sleepiness during a wakeful condition.
Thus here in the above statement Jon brain release adenosine that is responsible for sleepiness during the wakeful situation.
