What I do is ride on a trainer 30 minutes a day for five days a week in Oct/Nov/Dec. Jan into Feb I bump it up to an hour as riding season gets closer. March and the outdoors come back. I used to do a computrainer spin class (the best) to get the watts back up, but I have gotten away from that. This fall radiation treatments has kept me away so I have a lot of fitness to get back. But I got thin!