From the tame to the exotic, these alternative winter sports will keep you outside and in shape until all the snow finally melts away. Fat biking: Fat bikes, which have large forks and huge nubby tires, were invented so that Alaskans could commute by bike. However, in the past few years winter biking has turned into a much more recreational activity. Fat bikes have become exceedingly popular in the Midwest where the terrain isn&#39;t too ideal for skiing. Instead, rolling trails and frozen lakes lend themselves nicely to wintertime cycling with fat bikes. Fat-bike rentals are popping up in ski towns across the West. From Minneapolis to Jackson Hole, there are a variety of places where you can easily try the sport out for yourself.