![Josh Pigford on Twitter: "Started low heart rate training the other day. Keeping my heart rate in the “stamina” (aerobic) zone takes way more focus than I thought it would. I end Josh Pigford on Twitter: "Started low heart rate training the other day. Keeping my heart rate in the “stamina” (aerobic) zone takes way more focus than I thought it would. I end](https://pbs.twimg.com/media/DiMEZx_U8AEHE9y.jpg)
Josh Pigford on Twitter: "Started low heart rate training the other day. Keeping my heart rate in the “stamina” (aerobic) zone takes way more focus than I thought it would. I end
WHOOP on Instagram: “A low resting heart rate is an indication of a strong heart muscle. While the #1 thing you can do to lower your resting heart rate is…”
![Applied Sciences | Free Full-Text | Impact of Heart Rate Fragmentation on the Assessment of Heart Rate Variability Applied Sciences | Free Full-Text | Impact of Heart Rate Fragmentation on the Assessment of Heart Rate Variability](https://www.mdpi.com/applsci/applsci-10-03314/article_deploy/html/images/applsci-10-03314-g001.png)
Applied Sciences | Free Full-Text | Impact of Heart Rate Fragmentation on the Assessment of Heart Rate Variability
![Low heart rate while sleeping. First time I see this happening. Any ideas on why this could be? Should I worry? : r/AppleWatch Low heart rate while sleeping. First time I see this happening. Any ideas on why this could be? Should I worry? : r/AppleWatch](https://external-preview.redd.it/4LNMx4drjmfmICOyxYXCl_qpHE6xWnF-WpgEF-xB5JE.jpg?auto=webp&s=3022187806fe4d6aba26f83a237a6f129f11232f)