Any kind of construction job is hard on your body. That being said, there’s also, If you don’t use it you’ll lose it. I know lots of 80 year old bricklayers, friends from my working days. FIL is 93 don’t know if I would like that life style, he’s not having much fun these days. Life is what you make it. The important thing is that you like what you do, otherwise it’ll be a job not a career