Stepping out to a neighborhood place or two, however, easily fixed that: On Feb. 8, nearby errands sent my totals to 7,973 steps, 3.8 miles and 375 calories. And walking to my Metro stop, then strolling to a downtown destination, really ran up the score - on Feb. 11, when I only went to a basketball game in D.C., the Up recorded 14,232 steps, 6.9 miles and 701 calories.
(Running would burn calories faster, but it's also in the 30s outside as I type this.)
But don't take the mileage figures as gospel. Even after two calibration sessions, the Up still overestimated a walk as compared to the GPS-linked RunKeeper: 2.54 miles for the band, 2.32 for that smartphone app.
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Other forms of exercise can confuse the Up. It read an 18-mile bike ride as maybe five miles of walking, and a couple of hours of skiing didn't seem to register at all.
So you might prefer to clock your daily distances with a smartphone app. Conveniently enough, the latest release of Android (available on almost no phones) updates its Google Now software with an "activity summary" of your walking and bicycling.