About 6 weeks ago, a friend of mine's husband started cycling.
50 yr old, unfit.
After 2.6m, the next day he was well and truly broken, now 6 miles is fine and climbing.
I've been at it over a year now, and only just now am I at the point of not dreading hills and finding a day out with the wife, carrying a small picnic on the bike and doing 35 miles is about nice.
Jeff