Some things a Kenyan runner told me part one...
They warm into their training runs and follow the rule that if you begin at a much slower pace than you would normally run at straight off, your runs will be more productive as you climb into them. This helps them stay injury free.
They help their bodies kickstart their recovery processes at the end of every workout with an extra slow cool down for the last five to ten minutes, running five minutes a mile slower than their five km pace. They feel that the less you stretch and foam roll, the more you should spend time cooling down properly. This helps them stay injury free.
Their recovery runs really are proper slow. As much as four minutes a mile slower than their five km pace. Easy days are easy days so that hard days can be hard days. This helps them stay injury free.
Interesting stuff I am sure you agree.