The things you mentioned are all hard work.. Especially trees. There is absolutely nothing easy about working in trees, not to mention the danger Factor.
My nephew is a lineman apprentice in Arizona, I put on his gear including his belt and climbed a pole at his urging.. When he told me his brother who is an ex Marine wouldn't do it... I just had to.. lol
Talk about a hard and dangerous job. He hurt his knee in training, they were doing rescue practice coming down the pole with a 150 lb dummy and it didn't go well. He needs surgery on his ACL I believe, the company isn't backing him like they should and the insurance company is dragging their feet on his surgery.. I feel bad for him.
I've always said that weight training is easy and joyful compared to hard Blue Collar type work.