After a 7 week hiatus due to a broken pelvis from a bike accident, I took my first ride in Prospect Park, 4 loops. I didn't feel a thing out of the ordinary for a 54 year old somewhat overweight cyclist riding medium hard. The bone felt fine, the bone on the saddle felt fine, the legs felt like lead, the lungs like fire.
I'm going to try to keep up at least 75 miles a week which between work and home life is about all I can squeeze in. Maybe in the spring I'll have more time and get up over 100/week. There is always the trainer too.
I need to get my 2nd bike back from my son so I can ride it at a relaxed pace and not totally feel like a Fred on carbon poking along. I've just got to remember, hills are my friends.