Jawbone's 'Up Coffee' app tracks your caffeine intake, estimates when you'll finally be able to sleep
Ah, caffeine. So addictive. So energizing. So unhealthy. It's no secret that coffee lends itself to spurts of early-morning productivity, only to be followed by mid-afternoon slumps. And yet, we're somehow always surprised when that 4PM frappuccino keeps us up past a reasonable hour. \"Up Coffee,\"