“Look at your whole life, list your obligations and tasks.  Put a time stamp on them.  How many hours are required to shop, eat, and clean?  How much sleep do you need?  What’s your commute like?  Can you make it there under your own power?  Block everything into windows of time, and once your day is scheduled out, you’ll know how much flexibility you have to exercise on a given day and how to maximize it.” ~ David Goggins, Can’t Hurt Me