How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, [Ludwin] noted that ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. February 18, 2025 Add ...

We reported earlier this month on the new code. Code found in the latest beta refers to new wireless earbuds with a heart-rate sensor. “Wear both earbuds during workouts to track and send your heart ...