When I hear my husband is headed to Best Buy, I get a bit nervous. My fears my be slightly allayed by the fact that select outlets of this electronics mecca will be selling my favorite fitness accessory that features a computer chip: heart rate monitors. Forty stores in Arizona, Colorado, Iowa, Maryland, Massachusetts, Nebraska, New Mexico, and Texas will be selling HRMs as well as pedometers and gear for swimming, yoga, and Pilates enthusiasts. Many locations will also have cardio machines like ellipticals, treadmills, and stationary bikes for shoppers to test drive. My guess is that the store is also hoping you will think that you need a flat-screen TV for your new home gym, but I still take this as a positive sign for incorporating fitness into daily life.