Chris Shugart's (the author the article) definition of Lifestyle:
"Lifestyle is the trickiest category. What is "lifestyle" anyway? Sleep levels, stress levels, drug and alcohol use, and anything else that doesn't fall into the other categories. Lifestyle might even be the foundation of your pyramid if you're screwing it up badly enough. After all, how much progress are you going to make in the gym if you're a stressed-out OxyContin muncher who sleeps only four hours a night?"
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."