Relaxation isn't a theory, it's a way of life. When you step outside of the insane and stressful mentality of having to kill yourself to make a good living in life then your life will improve immensely.
There should be no reason at all for you to not take it easy for at least ten minutes a day.
The only reason to have 9 to 5 environments in our field is simply to have everyone communicating at the same time. An office can be anywhere for us, not just a leased office. This is a luxury that most workers will never know.