Your conditioning plan calls for a three-mile run today. Instead of driving around to figure out the course, try Nike's latest running system, which measures that-and much more. 

Ever heard the saying, “Feel the music”? Well, the folks at Nike and Apple have turned that phrase on its head[phones]. They want the music to feel you. A line of NikePlus shoes features a built-in pocket beneath the insoles to accommodate a sensor, which syncs to your iPod Nano to evaluate your speed, distance and calories burned—basically a real-time analysis of your workout.

Need a boost on that final stretch? The system has a voice-feedback option that offers regular updates—including the encouragement of a personal coach. There’s even a PowerSong setting that plays your most inspiring tune—maybe a little Linkin Park?—with the push of a button.