I know it's not cycling but I got into it a bit, really good for me due to suffering reynauds, so able to keep warm on a cold evening. Also much easier just chucking on some clothes when I'm back from work.I tried running yesterday morning for just 2.5 miles. I wouldn't advise. My legs still hurt - more than they ever have from cycling.
Good training for cx too. Managed to get down to a 20:01 5k before my off few weeks back,whicj is just bit too painful to run on from the bruising still. Besides now summer is up and running much rather be out on the bike!