One of the milestones in life occurs when you can no longer kick your sons' butts at cycling, running, whatever. For myself, in my late 60's, that occurred a long, long time ago, but a new opportunity has arisen. One of my twin sons is local and was a Cat 2 last year, so you can imagine that not a pretty picture cycling-wise. His twin, however, has just moved back to California with wife and 2 y/o son; he is overweight and out of shape. I have every intention of humbling him at every opportunity. Unfortunately, the 30 year difference in our ages means that the slightest effort on his part to get in shape will find me getting crushed. I'm sure others have had similar feelings and experiences.