I think genetics played a pretty big role there. I like intermittent fasting, I love sprints...but I'll never be at the level of Hershal Walker. Not without many trips to Tijuana! It's interesting stuff but it's always a hazard emulating the workout and lifestyles of elite athletes. Approach with caution.
"Survival will be neither to the strongest of the species, nor to the most intelligent, but to those most adaptable to change."