How to Start Biking When You're Over 40 | POPSUGAR ... I spent most of my life terrified of being on a bike. In the '70s when I was just a preteen, I had a nasty accident that landed me in the emergency room. Luckily there were no serious injuries, but mentally, it was terrifying. Always worried I would fall, I never felt comfortable on a bike again . . . or so I thought.