Chris Shugart has changed his formulations over the years, the original V-Diet article is not the same as his latest recommendations.
The new recommendations are a bit more formalized in this Physique Clinic article series about 1/2 down the 2nd page:
Dan John also used PB here:
"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."