If your heart rate exceeds 100 beats per minute at rest, or if you experience unusual heart palpitations while lying down, this could indicate a drop in oxygen levels. The heart compensates by pumping faster to distribute the available oxygen.Studying Atmospheric Sciences
4. Muscle pain and cramps
Muscle cramps or chest pain, such as angina, can indicate an oxygen deficiency. This problem can be alleviated by a diet rich in electrolytes and vitamins E and B.
5. Heavy legs
Climbing stairs or walking on a slight incline can become difficult if your legs are lacking oxygen. This symptom, often linked to vitamin C and E deficiencies, also reflects a lack of heart function.
6. Brittle nails
Pale, brittle nails or nails marked with deep vertical lines can indicate anemia. An iron deficiency or a lack of hemoglobin reduces oxygen transport to the extremities, thus damaging nail health.Obtaining Textbooks in Biological Sciences
