A Scandinavian friend of mine took his young boys to the United States this month. One of the boys, 8 years old, asked where were all the bikes? He was concerned that Americans would become unhealthy and overweight without their bikes. That’s not a concern in Scandinavia, particularly Copenhagen, a city where the bike culture is strong. Next time you’re cruising to or from Copenhagen, consider hopping on a bike. It will make you feel healthy and young again.