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Misfit Flash monitors your steps, tracks your sleep cycle and does everything you'd expect from a fitness tracker. And it's only $49!
Anyone who loves stats, analytics, and all things tech-related will get a kick out of the Fitbit Flex ($100). During the day, this slim bracelet remembers your steps, distance, and calories burned, and at night, it tracks your sleep quality. Your friend will know they're hitting their healthy goals when all four lights are lit, and when the band lights up and vibrates, it's incredibly motivating.