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Thanks to technology, we are benefiting more and more on the health and fitness front; take Wahoo Fitness, for example. Tailored to the iPhone, this device attachment monitors your speed, stride, heart rate and more.

Using telemetry technology and ANT+ protocol, Wahoo Fitness is perfect for runners, bikers and walkers. Since spring is around the corner and outdoor exercise will soon be replacing stale gym time, this offers a great way to track your progress. It costs $130 for the runner's package.