The secret to a hard body isn’t just working harder, it’s also knowing when to give it a rest. Polar’s FT80 heart rate monitor helps you find that elusive edge where effort translates to maximum improvement. Rather than simply counting beats per minute, it actually tracks your recovery time to tell you when to hit the next interval and when to take a breather. Onscreen graphic feedback makes it easy to follow orders. Back home, the unit syncs wirelessly with Polar’s savvy Web service for powerful post-workout evaluation. Best yet, it won’t look out of place when you transition from sports club to nightclub.