training
well, as far as i know overtraining really depends on the amount of training before. If he trains 3 hours a day, and in this case, it´s even less, it canbe far off from overtraining. However, i do agree that sessions shouldn´t be lost due to lack of power, IN GENERAL. I do believe that here and there you can be too tired to have workouts, after all - we´re alive, work, possible lack of sleep, and tons of other reasos can cause our body to be weak - don´t fight it! My suggestion, though, is to make your effort count - alternate between workouts (especially the running) - don´t just run 15k evey day - if nothing else - it would become boring! do some sessionsof longer, slower run (maybe around 20k) and one session of faster, shorter interval or hill workouts. etc. Don´t forget to have a slow weeks every 3-4 weeks (slow week - run about 50%-60% of what you´re used to) - your body would appreciate it, and would improve from it/ Also consider one rest day a week.