How many hours should I practice programming to avoid burning out?

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A2A, I have no idea. I’ve never been burned out. My roommate is a coder, he seems to get burned out all the time. I don’t really get it. When I feel like coding, I code. When I don’t feel like coding, I don’t. I could see how if I didn’t like coding or if I never wanted to do it, how I might get burn