Out of curiosity, what discipline do you train and how FREQUENTLY do you train?
For me, trailing: twice monthly with unit for 6+hrs, plus average twice weekly for an hour.

Julie and interesting question and I would say that interval depends on the age of the dog what you are training for and sometimes the breed of a dog. With a young dog I try to train once or twice a day for about 15 minutes of continuous training each session. That time frame would depend on what I was teaching and sometimes the weather (very high humidity)would be a factor. With a herder one can train more frequently than a mastiff breed and also with more repetitions of the same thing taught the same way. With a mastiff you have to change things up because they for the most part hate redundant training. If I am preparing for a trial then my training will be 2-3 times a week depending on the availability of helpers. For a dog at this stage in there training it is good to remember that they already know what you are teaching but you are working at correcting small things within a routine. That training IMO is the most difficult because in correcting one thing, or trying to, you may cause another. Sometimes it is best to let a few points go for the sake of the whole routine and its score. Norman Epstein