she is a housecat and because we live in an apt. theres no garden or porch for her to wander out to. we've had to make do with her climbing out of the window (thers bars but if she slips or loses her balance she can fall thru.) I think it can go either way - she might release alot of energy and hopefully calm down for the night or it will get her even more excited (i'm afraid if i start it will become routine and because i end work pretty late some days i dont want her to get too used to the idea)