Making learning interesting. The fine line.

People learn faster when they find things interesting and they're interest is held. So as a coach I think its important to make things interesting and keep the athletes I coach challenged. If things are too easy people tend to switch off. Especial novice rowers. On the other hand if things are too challenging then it can be detrimental as the athletes feel overwhelmed  confused and as they just aren't up to physically or mentally, doing what your asking of them they will think they are not able to do it and start associating rowing with not being able to do anything right. 

So there is a fine line between the two. Not making it too hard and not making it too easy.The exercises picked must be doable and tailored for the athletes ability. For example doing pick drills from front stops in a beginner 8 all 8 is a recipe for disaster where as in a competent 8 it will challenge them and keep them on their toes.