it doesn’t seem like anyone really knows exactly why some people yawn during or after exercise but there are some theories. one thought is that you may be trying to get more oxygen. think about what a yawn actually is; a long deep breath of air. this deep breath may serve as a means to get more oxygen into your body which makes sense because exercise can make your body oxygen-deprived. yawning can also increase heart rate and blood pressure helping to increase the cardiac output that your heart might need during exercise. some research suggests that yawning could actually provide a cooling effect as a way to regulate your core body temperature after exercise as well. of course you may just be yawning because you’re fatigued or sleep deprived or it could be a side effect of some medications too. there really isn’t one single answer as to why we yawn during or after exercise. excessive yawning may be the sign of an underlying health condition however so please consult your doctor for further guidance.
why do i yawn after 30-40 minutes of exercising?