What if an athlete you are coaching says: "Hey, Coach, I feel like I am getting stale with this training routine, can we mix it up a bit?" As you are a well organized coach with a scientifically proven program, you know that even small changes will alter the physiological make up of the program. But if you knew that making a small adjustment could improve your athlete's mental state and assuming this is as important as their physical preparation then you'd make the adjustment, right? Even if this meant that you were the one who had to adjust the most. You would be willing to adapt your behavior a little bit. Further reading ...