Manage your energy, not your time

I recently purchased a book for my Kindle called HBR's 10 Must Reads on Managing Yourself (with bonus article "How Will You Measure Your Life?" by Clayton M. Christensen). Included in this book was an article called Manage your energy, not your time. This great article from 2007 provides some basic but hard to apply ideas on how to increase your energy level.

We all have read the articles on how people who work 10 hours a day are no more productive then those that work 8 but this article provides good advice on how to get maximum performance out of those days. I haven't started yet but I'm going to see if I can increase my energy levels. I would however add one thing to their list. Do exercise in the morning. I often don't, but when I do I feel great.