One of the perks of being a freelance contractor is I can set my own hours. I virtually never just work 9-5. I work in concentrated chunks throughout the day with long breaks, sometimes an hour+ in length, in between. I often walk a lot and do stuff outside during the day, and then work quite a bit instead in the late evenings. Think about it: if all you're doing is staring at a computer screen and typing for your job, why on earth would you waste daylight hours doing that, and then when you're free it's night time? Huh?!