What are the ideal working hours according to you?

I'm a morning person and like to break up my day with a mid-day lunch + workout.

I am an early riser. Usually around 4 am unless I stayed up late working the night before. I have to have around 7 hours sleep. I do my best work 5 am to 8 am and then 4 pm to 7pm. I like to take a break 1 pm to 3 pm.

When you need a break change your activity. Come back and make a list. I think most people fit in the window of 8-6 but working hours should, and for me do, fluxuate on a number of factors: weather, sleep the night before, clarity of intent and clarity of thought.

I try to focus on 10am - 5pm for all of the main tasks, other than discussions with overseas practitioners who we need to talk to in their working day.

10am to 6pm

9 am to 8 pm now, want to cut it to 10-7 after launch

I try to do all manual tasks in the mornings and move all my meetings, calls etc to the evenings - this way more creative work is done when I have lots of energy and all the talking is moved to the second part of day

I am the most productive from 16:00 till midnight)

As a founder, I try to keep my working hours between 14 hours and 16 hours. More than that does not do good to my body and less than that is not enough.