Answer:
Adenosine.
Explanation:
Adenosine is a neurotransmitter that is created in the brain and when it binds to the adenosine receptors, it slows down nerve activity and it creates a sensation of drowsiness.
<u>Caffeine</u> looks like adenosine to the receptors, therefore, when we have caffeine, <u>it binds to these receptors and there is no room left for the adenosine to bind</u>. However, the caffeine doesn't slow down nerve activity but, in the contrary, it speeds it up.
Therefore we can tell that caffeine blocks the receptors for the adenosine thus promoting wakefulness.
Some examples of personality traits would be: kind, energetic, sociable, sympathetic, imaginative.
So you just have to figure out what kind applies to you (you can look up different ones)
Circulation of the air, letting outside air in and air filters.
GHB is the most common drug slipped in drinks