Does everyone have a set plan of what they're going to do when they exercise? I don't. Rather, I have loosely defined targets I try to hit each week. I try to run about 20 miles and do 3 - 4 Dailey Method classes per week. Handstand practice is nearly daily, as is my 10 burpee thing.
So I'm thinking about getting more scheduled about my workouts. Tim does this. He'll put for each day the category of movement he's going to do (cardio, weights, yoga) and then decide on the amount of time and methodology on that day. It works for him.