Would you feel light headed if you are getting too much oxygen?

Yes, feeling lightheaded can occur if you're getting too much oxygen, a condition known as oxygen toxicity. This typically happens at high pressures, such as during Scuba diving, but can also occur with excessive supplemental oxygen. The body may react to elevated oxygen levels by affecting the nervous system, leading to symptoms like lightheadedness, dizziness, or even confusion. However, under normal circumstances, simply breathing oxygen at atmospheric levels does not lead to these effects.