I would suggest picking up a sport(insert some form of physical activity). By working more hours you are not necessarily providing the startup with more produc

I would suggest picking up a sport(insert some form of physical activity). By working more hours you are not necessarily providing the startup with more productive hours. The longer the hours the more burnt out you will get. This will result in more mistakes (bugs), more time spent trying to solve problems etc.. Do not feel guilty for taking some time out for your own life. Not only will this help you, it will help the startup. It will give your brain time to reset and you should even see an improvement in time it takes you to do tasks. Even just taking time out of the office for a decent lunch break will help make your afternoons so much more productive. The number of times I have walked away from a problem to go for a walk (anything else but sitting at the desk staring at the problem), to come back to the problem and know exactly what is wrong.