Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: " Mmm ... finally ! It never tastes so good as when you have n't had any for a while ... though I 'd actually rather just have regular meals ... " Her voice slurred and she choked slightly on her next bite . " Oh , I ' m SO tired ... will it be safe to go to sleep ? What if someone notices the horses , or it starts pouring rain ?

Question: What is the reason things never taste as good as when you have n't had any ?
Flavors stand out if they have been absent from you for a time .
The pleasure of eating is heightened by deprivation.