Researchers hope a pilot project that monitors the heart rate of baby seals will help them understand how the pups prepare for life in harsh conditions.

Those devices were an Apple Watch Series 10, a Fitbit Charge 6, a Garmin Forerunner 265S, an Oura Ring 4, and a Whoop 4.0.

Smartwatches have grown from obscure gadgets and fashion accessories to comprehensive health and fitness trackers in just a ...