Add Yahoo as a preferred source to see more of our stories on Google. (Photo/Torwaistudio via Shutterstock) Indoor bike training seems like a sufferfest: a sweat-drenched cyclist alone in a dark ...

Eric Holte (left) learns to fix his bike with volunteer Michael Benko at Bike Church, a learn-to-repair bike event at Neighborhood Bike Works in Philadelphia. (Kimberly Paynter/WHYY) Neighborhood Bike ...