In my experience I believe its possible to shift the emphasis by adjusting the angle so i tend to break my workouts up like that. I have known people that didnt agree but to each their own.
Sadly, I didnt make it to the gym yet today 
I spent the day detailing my car which was needed very badly so its was a good reason. Im still debating going to the gym tonight at like 8 or 9 after the peak crowd leaves.
Jimmy