it can be mentally challenging, depending on what you are working on. While I agree you are not lifting heavy stuff, or doing anything physical, working on ha

it can be mentally challenging, depending on what you are working on. While I agree you are not lifting heavy stuff, or doing anything physical, working on hard problems can be mentally tiring and tasking to your health if not done in moderation. If you are just doing anything that is easy (a simple web app), then the hard part would be getting motivated to get started, but after that it is more mechanical, your are just cruizing by (and probably not learning much). BUT if you are working on really technical stuff, beyond your normal comfort level then that is not the case at all. Your brain will fatigue, and you will actually feel the pain of work, (this is a good indicator that you are learning something new and it is tasking your brain). Also, for people with more responsiblities, the worrying about work doesn't really end when you go home. If you are managing people, or need to learn new technical skills/updating your self, it becomes a bit hard to just switch off. When you are working more normal jobs, once you go home you can just 'switch off' and just worry about your home tasks. So, it all depends...