"Mastering others is strength. Mastering yourself is true power." -Lao Tzu
This Wall Street Journal article details the peak times for you to do almost everything, from when to think outside the box, when to exercise, and even when to eat! This comes with the disclaimer that everyone's body clock is different, so times may vary a bit.
The philosophy behind good social dancing, leading, following, and topics that discuss more than just Salsa Cubana.