Depends on the season. If my horse is conditioned and we're in the heart of show reason, I don't ride her at home at all. I do CTRs; I ride her 50 miles, she comes home and gets two weeks of rest, and then we go to another ride. This goes on during spring and fall. During the winter, after our last ride of the year, she gets 6-8 weeks of complete vacation. I pull shoes, cut her grain, and let her be a horse. When the weather clears back up, I start riding her regularly until next show season. 4-5 days a week. She's never crazy, even after those 8 weeks off. She's the same horse every time I get on her.
My other horse isn't great on that program. I can actually tell if she hasn't been ridden in a few weeks because she acts like an idiot. I get on her at least every other day to keep her brain conditioned.