In his book, “Bike for Life: How to Ride to 100” (Avalon Press, $16.95), my SoCal buddy and fellow fitness/outdoors writer Roy Wallack lays out a premise that says cycling — with its combination of fun, ease of use, travel, social interaction, joint-gentleness, and physical challenge — is the ideal sport for longevity. Now I’m just a young chick at 30 years of age. But for me this book was still relevant and interesting, not to mention hilarious, informative and even juicy at times. . .