I did construction for years. Started working for a huge hobby store retailer. We did all the fixtures in stores such as checkout stands, merch tables. display racks ect for all the stores. I built custom cabinets for drag racing courtesy trailers and finally did trim carpentry and custom closets for a year. (Lots of money in closets, go figure)

Trim took it's toll on my knees. crown moulding was not so bad but bottom trim on your knees all day HURT!

It helped me get my job as a building inspector. 23 years now. I get a good mix of desk and field work so i can sit for an hour and a half at my desk then go out and do inspections walking around, and finish with an hour or two of data entry and returning emails and calls. I love it.