"Take 5" means to take a break.  Take 5 gives you a quick rest whenever you need it.
Take 5 will also help you focus and concentrate.

How to do: Sit cross-legged. Lift one finger at a time as you breathe in through your nose and count in your mind: 1, 2, 3, 4, 5. Pause for a second with your hand up.  Slowly breathe out through your nose.  Count backward - 5, 4, 3, 2, 1 - putting down one finger at a time for each number.  Do "Take 5" anytime to help calm and center yourself.