What he was really doing is called 'fast tracking,' which is when you run, hike or do both as fast as you possibly can, it's not so much a sport, as it is usually trying to break a record for a distance like that.

Sunny Blende

Categorized in : Science

It's probably become tenfold greater now than 20 years ago, there were hardly any 100-mile runs in the '80s and '90s, and now there are several hundred 100-mile runs.

The problem is, you can't just decide in your mind, OK, today I'm going to burn my fat instead of burning more carbohydrates. You have to train for that.