I've tried to "convert" coworkers and some of my neighbors. They all give the same excuses: too hot, too cold, what if it rains, too much traffic, I'm out of shape, my bike is so old, I'm too old...

What they are really saying is, "I like a life of air-conditioned (or heated) comfort at home, at work, and while I'm travelling there."

They rarely get out in the heat or cold other than to do the necessary yard work or household maintenance.

Too bad they're missing out on so much of life.