Run Speed Training Guide by Dr. Joe Vigil
In this video:
00:08 The Biologic Law of Training
01:36 Gradual Adaptation to Stress
2:00 Achievement Triangle
Inside this video you'll see Dr. Joe Vigil giving a quick summary of the biologic law of training. He discusses how the genetic system and its performance is based on the genetic make-up of an individual. He also highlights on the importance of properly increasing the stress load of runners.
This is very important to point out because currently what's happening is that there are coaches out there who are not properly trained to conduct training on young people. Sometimes, they can actually bring in more harm than good to these young runners.