Polar Journal

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The latest Polar news, expert advice, and hottest topics in sports, fitness, and training.

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How Many Days a Week Should I Work Out?
Workout
anxiety and heart rate

Understanding the Connection Between Anxiety and Heart Rate 
Sleep and Recovery Mental Health

The Dreaded Detraining: Why You Shouldn’t Fear It
Sleep and Recovery Detraining

Can Caffeine Improve Your Athletic Performance?
Workout Nutrition

Dreaming of a Sub-3 Hour Marathon
Running Marathon

Finding Her Flow: Paralympian Melanie Barratt on the Joys of Open Water Swimming
Athletes Strong Women Swimming

The A to Z Glossary to Trail Running
Running Trail Running

How Much Rest Should You Take During Your Interval Workouts? 
Workout Strength Training

Keep Your Cool and Learn to Sleep in the Heat
Sleep and Recovery Sleep

Karel Sabbe: Out Running
Athletes Trail Running Ultra running
physical and mental health

Does Happiness Lie in the Connection Between Physical and Mental Health?
Workout Mental Health

Measure Every Move With Polar Verity Sense – Your Optical Heart Rate Sensor for Any Sport
Polar News Polar Verity Sense

It’s Time to Move for the Planet
Polar News

Swim Faster, Smarter: Incorporating Technology into Swimming Training
Workout Swimming
Festival workout playlist

2023’s Festival Workout Playlist is Here to Up Your Stamina
Workout Motivation Playlist
Hot yoga

How Hot Yoga Can Elevate the Intensity of Your Workout 
Workout yoga

My HRV is Very Low. Can I Increase My Heart Rate Variability?
Sleep and Recovery Sleep

Will I Ever Qualify for the Boston Marathon?
Running Marathon

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Polar News
heart rate variability

Everything You Need to Know About Heart Rate Variability (HRV)
Heart Rate Training Data