Spin Class Hero: Newest Must-Have Gear For an Indoor-Cycling Class

Fitbit's new Ionic Smart Watch ($300) tracks over 20 types of activities with real-time stats using Exercise Mode, including cycling. Additionally, Ionic features FitBit's most advanced PurePulse heart rate tracking device to date, including enhancements for greater accuracy during high-intensity workouts and exercises like cycling so you'll know exactly how hard you're working and how many calories you're torching.