If you are completing outdoor exercises at a high altitude, there are a number of considerations that you must take into account in order to avoid injury. At a high altitude, the oxygen content of the air you breathe is less than at sea level. This results in your heart needing to beat more rapidly so that your muscles and tissue receive the oxygen that you need.
Breathing air with a lower level of oxygen may have a number of side effects. These include an elevated heart rate, hyperventilation, dizziness, insomnia, weakness, headache, and irritability.
Consulting a physician before starting high altitude outdoor exercises can help you determine the intensity of your workout and your weight loss program.