"What do you do when you feel burned out?"If you never burn out, then you are either superman or you don't work that hard. It is ok to admit to burning out at times, and you should provide an answer that shows how you deal with the times when you do get burned out.
Short Answers"I think it's important to anticipate being burned out before it happens. But if a deadline requires me to work so much that I end up being burned out, I try to relax myself and get reenergized by not thinking about work at home and watching a good movie.""When I feel burned out, I go to the gym and work out. This actually helps me because it moves the focus from my mind to my body. After a good work out, I really feel mentally rejuvenated.""I usually use the weekends to engage in my personal hobbies to prevent me from burning out. I like to play tennis and golf, and these activities keep me mentally energized to work hard in the office."Long Answer"I try to prevent burning out by maintaining a healthy balanced life. I try to engage in personal hobbies outside of work such as playing the guitar or going for a hike. They keep me energized to work hard in the office. But if I do feel burned out, I like to rent a movie and relax for the night."As you can tell, this is an easy answer. Many times a person who constantly works without a break can eventually become a bad employee by burning out. Being able to communicate exactly what you do during burnouts or how to prevent them indicates that you have balance. So simply listing a couple of hobbies and adding, 'keeps me energized to work hard in the office' is a good enough answer that the interviewer will accept.