Why Is My Heart Rate High in the Morning? - The Pulse Blog

Having an elevated heart rate when you wake up can inspire all kinds of questions. Here's a primer on what to do when this happens.

All About Heart Rate (Pulse)

Racing Heart? 12 Reasons Your Heart Rate Won't Go Down

Reasons Your Heart Just Skipped a Beat and When to Worry

What is A Normal Resting Heart Rate?

5 reasons being sick can cause a high heart rate

What your heart rate is telling you - Harvard Health

Resting Heart rate – The daily variation – JUSTIN TIMMER

How Your Heart Rate Can Show Signs of the Flu, by Harish Kilaru

Normal Heart Rate By Age: Range, Charts And More – Forbes Health

High resting heart rate predicts heart risk in women at midlife - Harvard Health

Heart Rate Variability and Sleep - Amerisleep

Heart Rate Spike upon Waking - Fitbit Community

Why Is My Blood Pressure High in the Morning?

Your resting heart rate can reflect your current and future health - Harvard Health

Have you ever woken up with an increased heart rate?

Can Anxiety Cause a Slower Heart Rate?

Monitor Fitness and Fatigue by Measuring Resting Heart Rate

Heart Rate Variability (HRV)

How Our Heart Rate at Rest and During Recovery Tells A Story

How to get the most out of the Apple Watch heart rate features - CNET