Which way do people look when they lie?

Anywhere but towards the speaker. It really depends on the person. But, they would try to avoid the questioner. 

When people lie, they usually fail to make eye contact. Their face either gets pale or coloured. If the person is not an expert in telling lies, he will pause frequently while speaking.

In other words, the person may feel uncomfortable.

helps cool the body

Explanation:

Perspiration is the loss of water from the body. The water contains some other minerals that are dissolved in it. Perspiration is one of the homeostatis mechanism which helps the body to perfectly adjust to its environment. During perspiration, as water is lost through pores, body cools and temperature is lowered. This why during exercise and extreme labor sweat is produced.