The Way to Advanced Fitness Is a Disciplined Recovery Interval

The way to vanced fitness is going to be the way, the way the fitness advances. Making the hunder meter recovery interval more disciplined by running at marathon pace. And advancing tho threehundred meters speed, and or crating higher density by making it six laps or eight laps. If an athlete has a really low sensitivity to longer runs, c e been doing em a long time.