Zwift feels as if you’re playing Mario Kart, except all the drivers are on bikes and the characters are avatars designed by you and other users. Plus, you get one hell of a workout while competing in this gamified experience that can be found on many of the top-rated exercise bikes. For $20 a month,

Fitness trackers have come a long way from the simple bands that tracked steps and little else. Modern trackers can monitor everything from your heart health to how well you’ve recovered from a hard bout of training. Even flagship smartwatches, which used to be lackluster trackers, have become pretty adept workout companions. Whatever your fitness