Fitness
The place to learn about everything fitness, from lifting and cardio to how much exercise you actually need to stay healthy.
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How Apple Watch, Fitbit, Garmin, Oura, and Whoop Compare on Measuring HRV
I tracked my sleep and recovery with five different devices for two weeks. Here’s what I learned.
How to Do Fartlek Runs (and Seven Different Kinds to Try)
This semi-structured workout can be great speedwork, once you figure out how to get started.
All the Different Bars at the Gym, Explained
How much does a regular bar weigh? Is that thinner one a women's bar? Your questions, answered.
Six Things to Do Between Sets at the Gym
Does “rest” really mean "sit there and do nothing"?
The Powerbeats Pro 2 Track Your Heart Rate From Your Ears (but Not Very Well)
I put this ambitious feature to the test.
A Beginner's Guide to Gym Terminology
Supersets, compounds, RPE, and what "rest" really means.
My Favorite Amazon Deal of the Day: The Garmin Forerunner 955
Both the battery and solar versions are up to $200 off, reaching a record-low price.
How 'Sprint Interval Training' Compares to HIIT (and How to Do It)
Get ready to improve your running.
Why (and How) to Wear Your Apple Watch on Your Ankle
How does it work, and is it accurate? I tried out this hack for science.
Which Is Better: Flipbelt vs. SPIbelt
These running belts are two excellent options that couldn't be more different from each other.
The Two Biggest Mistakes Beginners Make on the Rowing Machine
If you've always had trouble with the rower, try these two fixes—one for technique, and one for the damper setting.
Which Is Better: Whoop vs. Oura
Want to track your health and sleep without a watch? Here's my take on your two best options.
What to Do If Push-Ups Hurt Your Wrists
Wrist CARs, push-up handles, stretches, and form cues are all at your disposal.
The ‘15-15-15’ Workout Is Great Cardio for the Easily Bored
And I'll fight Jennifer Aniston for credit as its inventor.
Why Some Gym Machines Feel Heavier Than Others
Don't trust the numbers on the weight stack.
Which Is Better: Oura Ring 4 vs. Oura Ring 3
The new and old rings differ in shape, size, and battery life. Here's what I found when I wore both at once.
Garmin Says They Have Fixed the 'Blue Triangle of Death'
The company has now published instructions for a fix.
Why Zone 3 Cardio Is Just as Good as Zone 2
Don't worry too much about the difference—both are beneficial in similar ways.
Why Fitbit Is Limiting Battery Performance on Some Smartwatch Models
The batteries in some Sense and Versa watches could pose a danger.
The Pros and Cons of Splitting up a Workout Throughout the Day
I divided my workout to test out my own advice, and I loved it—at first.