How Your Smartwatch Reads Your Heart ❤️⌚ (PPG Explained!)#Smartwatch #HeartRate #PPG #TechExplained

PPG on Instagram: "We’re just one day away from the Brickyard 400 Presented by PPG, and we’re keeping the excitement going with a special edition of our “In the Paint Booth” series. @joshberry88 of @woodbrothers21, driver of the No. 21 PPG Mustang in the Brickyard 400, goes head-to-head with @josefnewgarden of @team_penske in a PPG quiz. See which of our partners knows their PPG facts, and who’s just winging it. Test your trivia knowledge, too, and tune in Sunday to see Berry in action at the Br