Almost a year ago, my wife surprised me with a Fitbit for my birthday. Perhaps she had noticed me glancing at hers longingly, checking in on her weekly challenge stats, monitoring the rises and falls in her heart rate, or surreptitiously slipping it on late at night when she was in bed and had left it to charge. The power I felt when wearing it, if only for a few short minutes, was intoxicating. I, a mere mortal, could count my own steps and measure the pace of my heart!