Inside the Fitbit Human Research Lab with Tracy Giest

Your Fitbit tracker measures your heart rate, records your exercise and tracks your sleep. Ever wonder how the magic happens? Tracy Giest, who leads the Fitbit Human Research Lab, pulls back the curtain on the in-depth experiments and testing Fitbit conducts to develop its hardware, algorithms and new technologies. It’s a job that involves everything from dumbbells and snoozing employees to strollers and grocery carts.