Fitbit Charge 5 review: a great gift for the biohacker in your life | Mashable
Fitbit - One NASA study found that pilots who took naps for 26 minutes experienced a 54% improvement in their alertness compared to pilots who didn't catch any midday shut-eye. #napsthatslap | Facebook
Fitbit reveals new Sense 2 and Versa 4 smartwatches, plus Inspire 3 fitness tracker | Mashable