How do you guys maintain a healthy lifestyle?

I have recently been feeling the affects of sitting all day and want a change. I have hip pain, high blood pressure and I'm pretty over weight. I blame most of this on my job and how I sit basically all day and don't really have much time for other things(That might be a me issue because I have 3 kids who are involved in a lot of activities). I have been wanting to change careers for a really long time just to become more active and live a healthier life style, but none of them pay even remotely close to what I make as a software engineer(140k). I have considered becoming an electrician or something similar just to work with my body and not let it wither away. My question is do you guys know of any jobs or roles where you can be active and still utilize software engineering skills? It has to pay semi-well too. I'm willing to take a significant pay cut but not too much.

*edit - one other thing is I have been a software engineer for almost 10 years and it hurts to think of moving careers after all that time invested.