How much weight gain from adding a Dana and roll cage.

I started watching my weight a little in 2022 and lost 13 pounds. I lost 20 more in 2023 for a total of 33 pounds. No diet and very little exercise. Just trying to keep busier in the shop so I’m not sitting watching tv all day eating. I sure wish I could get back to walking but with two bad knees I can’t. I’m going to try to step it up some in 2024 to get my endurance up and do some house exercises and stationary bike.
Swimming?