Is it normal to yawn during a workout?
Yep.Totally normal
Yes—yawning during a workout can happen, and an occasional yawn is usually nothing to worry about. It may show up when you’re tired, warming up, or breathing harder than usual.
Yep. People sometimes yawn while exercising, and there isn’t one clear explanation for it. Being tired, shifting your breathing as you warm up, or the effort of a workout may all play a part. It doesn’t necessarily mean you’re doing anything wrong or that you aren’t getting enough oxygen.
If it’s just an occasional yawn and you otherwise feel fine, carry on. If yawning comes with chest pain, dizziness, or unusually severe shortness of breath, stop and get medical advice.