How do you effectively lie?

Answer 1

When you lie endorfins are released on your nose causing it to itch. Do not scratch your nose, do not blink a lot, and use contractions such as wouldn't instead of would not.

Actually, endorphins are only released by the brain. They cannot be released by your nose. Although the above answer about "don't scratch your nose" whilst lying, or contradicting yourself. Looking directly at the person you're lying to helps, rather than looking over their shoulder, or to your left.