According to a study, three conditions are related to the taste for hot food. First, people who like hot food usually live in warm weather. This is natural since peppers grow well in warm weather.

Second, the main food of people who like hot food is vegetables, not meat. Vegetables produce a lot of gas inside the body, and hot food helps this problem.

Third, people who like hot food do not eat enough food, and their menu changes very little.

According to a study, hot food makes people ⓐ______ more saliva. More saliva, in turn, helps them ⓑ_____ fuller and less bored with eating the same food again and again.