Im an Exercise PhysiologistHeres Why You Shouldnt Worry About Cortisol Spikes When You Do HIIT Workouts.

Become your exercise companion?Check.

Suffice it to say that the$2.9 billionon-demand fitness industryhas a new one to,ahem, watch.

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Does Dancing Count as Cardio?

Insufficient oxygen in the blood can interfere with the function of the heart and brain.

Its an especially relevant metric in 2020 asCOVID-19 patients tend to have very low blood oxygen levels.

image of a person doing a low lunge yoga pose in a pink sports bra and matching leggings on their blue yoga mat in the middle of their living room, learning the best yoga poses for your zodiac sign

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A more attunedVO2 maxmonitor also joins Apples library of self-metrics you might access straight from your watch.

The number tells you how much oxygen your body can use during activities.

This post was originally published on September 16, 2020; updated on September 17, 2020.

A young black woman doing post-run stretches in the park on the road amidst green grass and trees.

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woman sweating in the gym

Happy woman dancing and listening to music near a green empty wall outdoor in the city.

Tara Davis-Woodhall of Team United States celebrates with husband Hunter Woodhall after winning the gold medal in the Women’s Long Jump Final on day thirteen of the Olympic Games Paris 2024 at Stade de France on August 08, 2024 in Paris, France.

Healthy female training in the gym, performing a hip thrust.