I started working out regularly when I retired. I hate running, especially in the winter, as it just wrecks my knees and feet, so after trying a few out, I bought a Matrix A30 elliptical machine. I love it. I get on it 45-60 minutes a day. No knee or foot pain, which is great. If you want a low-impact workout, I'd recommend an elliptical.
I've gone a transport to DAC route for over a decade but I have two friends who two years ago each bought a new cd player they were very happy with.
One: https://www.audioadvisor.com/prnt-macd6007?sku=NEW-MACD6007
a review: https://www.whathifi.com/reviews/marantz-cd6007
The other: https://www.audioadvisor.com/prnt-nac538?sku=NEW-NAC538
a review: https://www.whathifi.com/reviews/nad-c-538