Very enlightening comments from all! Yeah, I would't fret over one or two occurences of this situation but for a while it was happening frequently. I can see everyone's point of view! Thanks! This will help others also when they come across this as a teacher/student. Perhaps the right thing to do is ask the student if he/she wants to train? You never know, some days when I don't feel like training turns out to be some of my best days of training!