You know the feeling. When you first see your crush and your head starts spinning, your palms get sweaty, and your heart ...

The fitness-focused Beats Powerbeats Pro 2 up the ante with noise cancellation, wireless charging, and heart rate monitoring, for bass-forward earbuds that excel at the gym.

The same goes for select gym cardio equipment. If you go to a fancy gym, you may have bikes or treadmills that can connect to ...