I often start at 7am and go until 10pm. My girlfriend makes me food and brings my caffeine. I have no time for "non work activities"though. I'll be in bed watching Netflix but really working on my laptop. Even when I have to goto the grocery store my mind is always on work. Being a remote employee, the line is blurred. If I'm out and about but all I can do is daydream about a new algorithm, I consider that working.