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Slunse Exercise Bike ($220, originally $410)

This sturdy bike is the perfect choice if you have your own tablet or like to cue up classes on your phone. Since it doesn't have its own screen, you can take cycling classes from whatever app you want — you're not locked into anything. The bike also includes a monitor to track your pulse, time, speed, distance, and calories burned. Overall, reviewers say it's a great indoor bike for the money spent.