5. Jaybird Reign
It may look like your average fitness tracker, but the Reign is smarter. Yes, it’s a bracelet that measures your running, cycling, swimming, walking and sleep with built-in accelerometers. But rather than tell you what you’ve done, it uses that data, along with detailed sleep metrics and accurate heart rate readings, to help you choose what to do next—get some much-needed R&R or push your limits. An integrated smartphone app stores your data, and gives you a user-friendly well-being/workout readiness report card in real-time. That means fewer bad workouts and—sorry, bud—no more excuses.