How many hours do you work per day?

I need regular breaks to think but very productive during the time I'm working

Sometimes 3-4, sometimes arround 10+

12 hours +

I have breaks during the day cause if I sit too long my back hurts, I need to move around. But generally 4 hours straight is my limit, max 8 hours a day.

8 hours for my 9to5 + 5 hours a day for side projects. Including about 3 hours of breaks in between everything stay productive

Probably about 15 hours

I work a full time job then come home and work anywhere from 2-4 hours a day on my startup. I'll guess I put in about 20-30 hours a week on my startup

I work 5-7 hours a day.

Most of our employees work more, but they are passionate.

Working for 8hrs plus studying and classes all total my day is of 16 hrs.

About 6-10 hours per working day. It is almost impossible to work a lot all the time.

12+ hrs, manage external meetings during most of the day and at night or early morning is where I get things created/done.

7 hours of work, 3-4 hours of study, and 1h for a workout. On a good day :)