These 2-year-olds are quite like humans who develop athlete's heart via excercise. Nevertheless, people are not working 7 days a week as they did 50 years ago, and the afternoons are devoted to the races. The racetrack may be locked daily at 10 AM. The practical labor conditions greatly influence the training program.

Most training plans have daily 1 or 2 mile gallops and once a week breezing at 2-6 furlongs. Is it a mile track or shorter or longer? On a farm? Is the excercise boy freelance? Are the horses mostly 2 & 3 year olds? What does walk 'n run mean? It means the horse walks between races.
What is the problem with young horses ? The problem is bucked shins and related some way to pain in the legs.