Pair programming is cool but please... if you're done with your work and nobody ask you for help or a pair programming session.. don't go to the most busy collegue and start working on his problem.. maybe he is debugging/trying some special and ultra complex functionality on his own! Try to ask if someone needs help before jumping to the next desk!
- Thaanks

My biggest influencer? My Web Dev schools psychologist. Always scheduling breaks in our day.
He continuously reminded us it's a positive thing to walk away from the code and change up the brain patterns.