Comment by artyom

I've been in both worlds and yes, a sedentary lifestyle is a really bad thing.

However the risks compared to physical jobs are not even close, they're at two different levels.

There's many, many things that can kill you instantly in the trades. Then there's stuff that may ruin your body no matter how careful you are.

Example: doing roofing means you're walking in a sloped plan all day long, every day. After 20 or 30 years, you'd barely have usable knees.