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b"Jess Kelly reviews the whoop 4.0 which is a different kind of wearable. It doesn\\u2019t have a screen, but Whoop 4.0 is possibly the smartest bit of training kit you should can if you are trying to improve your athletic performance. The small sensor tracks your heart rate, your blood oxygen level, your skin temperature, and your sleep, silently collecting data and shuffling it over to the app on your smartphone to be assessed.\\nListen and subscribe to The Pat Kenny Show\\xa0on Apple Podcasts, Google Podcasts and Spotify.\\n\\xa0\\xa0\\xa0\\xa0\\nDownload, listen and subscribe on the Newstalk App.\\n\\xa0\\xa0 \\nYou can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.\\n\\n \\n "