Winter is a time for contemplation, but that doesn't mean you have to sit and stare at the TV or fire every night instead of going for a walk or bike ride. If the short days and cold weather are keeping you from exercising, maybe it's time to look into indoor exercise alternatives. Read our new primers to get the skinny on the five most popular aerobic machines you can use at the gym or at home. Cross Country Ski Machines How to vary your stride and pace for a better workout.
Elliptical Trainers Get the benefits of running with what feels like an easy workout.
The newest versions make it impossible to cheat gravity. Stationary Bikes Choose your terrain without leaving home. Treadmills On some models, you can check your heart rate on the run. All rights reserved. Blue Cross and Blue Shield of Massachusetts, Inc., is operating under a license from the Blue Cross and Blue Shield Association to use the Blue Cross and Blue Shield names on services provided within Massachusetts.