how often do you train?

"How often do you train your dogs?"
Have you ever asked this of , or been asked this by , a fellow handler?
The answer very much depends on the individual dog and handler, and, living in the UK, it also depends on the weather!
If your dog lacks motivation, (or the handler does!) then training something repeatedly for any length of time will probably do more harm than good. Better to spend five minutes playing with your dog, so that he wants to be with you.
A game of tug is a great motivator. If this doesn't come naturally to your dog, then how about training it? Or finding another interactive game for you both to enjoy? Guess what, that's doing some training with your dog! It doesn't have to be on agility equipment, it's fun for both of you, and it can be a five minute session!
Of course for the highly motivated dog, he'll keep on working till he drops probably - hence my mention of the weather. When it is as hot as it has been recently, imagine running round in a fur hat and coat, and  in bare feet - need I say more? You have to be your dogs' common sense when the weather is hot. You wouldn't walk your dog in the heat of the day ( or at least I hope you wouldn't!) so don't train him then either. Just as when going for a walk with your dogs, early morning or evening are best, and keep the sessions short.
I try to discipline myself to train both my dogs daily, but this will not necessarily be for a long session each time. Sometimes five minutes does more good than repeating something till you're both bored stiff. I sometimes don't feel like it, either,  especially in this heatwave. However I know that my dogs would train whenever and whatever I asked, so it's more a case of motivating myself, rather than the dogs! I invariably find that once I start, though, I too enjoy the training.
People assume agility will be fun for all dogs, but that isn't a given. Some dogs do agility for themselves, others do it to please their handler. The holy grail is the dog who does agility with you to because it is great fun to work with you - or perhaps I should say it is great fun to play with you. Good training leads to the holy grail.
Remember, if it isn't fun for your dog, it is unlikely to be fun for you either, and as they say in entertainment, "Always leave them wanting more!"