Creative, stimulating pursuits. Puzzles, music, hobbies... Things that encourage you to think! Not just the thinking you need to do to fulfill your many obligations. The author encourages brain exercise as a departure from your daily routine.

My daughter and I have been debating where to put prayer, meditation et al. They certainly are a departure from the thinking I have to do at work.

Relaxing, rejuvenating? yup!

Susan, you could almost put it under "Play," being relaxing and rejuvenating and all