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But is it normal to yawn while exercising if youve had a full nights sleep and feel energized?

Learn those, plus what to do if its happening to you, below.

The long-standingtheory has been debunked for decades thanks to aseries of research in the 1980s1.

woman sweating in the gym

exercise physiologist at the Hospital for Special Surgery in New York City

Yawning induces physiological effects that would validate this, includingincreasing your heart rate2.

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Woman walking on a treadmill at the gym.

Im a Master TrainerHeres Why You Shouldnt Skip Your Post-Run Stretches.

So, what should you do if youre yawning during workouts?

Do you notice yourself yawning only during morning workouts or high-intensity exercise?

Full body female athlete in sportswear using rowing machine during fitness workout in gym.

What about the types of workoutsare you yawning more so during aerobic activity than strength training?

That means its not just about time spent in bed, but the quality of the rest youre getting.

Over time, theeffects of sleep deprivationcancontribute to overtraining.

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

exercise physiologist at the Hospital for Special Surgery in New York City

(Check out these threepre-workout breathing exercisesfor inspiration.)

(And its good to know when you need aworkout or sleep to boost energy.)

Provine, R R et al.

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

Yawning: no effect of 3-5% CO2, 100% O2, and exercise.Behavioral and neural biologyvol.

48,3 (1987): 382-93. doi:10.1016/s0163-1047(87)90944-7

Corey, Timothy P et al.

Changes in Physiology before, during, and after Yawning.Frontiers in evolutionary neurosciencevol.

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

3 Jan. 2012, doi:10.3389/fnevo.2011.00007

Guggisberg, Adrian G et al.

Why do we yawn?.Neuroscience and biobehavioral reviewsvol.

34,8 (2010): 1267-76. doi:10.1016/j.neubiorev.2010.03.008

Shoup-Knox, Melanie L et al.

Yawning and stretching predict brain temperature changes in rats: support for the thermoregulatory hypothesis.Frontiers in evolutionary neurosciencevol.

24 Sep. 2010, doi:10.3389/fnevo.2010.00108

Gallup, Andrew C, and Omar T Eldakar.

The thermoregulatory theory of yawning: what we know from over 5 years of research.Frontiers in neurosciencevol.

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