Scientists have been warning that decreasing amounts of available oxygen will increase stress on a range of species, even as they also face the effects of rising temperatures and ocean acidification. (scientificamerican.com)
Dizziness and lightheadedness: Largely abated by eating small meals throughout the day and drinking copious amount of water to keep hydrated, dizziness and lightheadedness result from a lack of available oxygen in addition pressure placed upon blood vessels. (checkpregnancy.com)
The main difference between running at high altitude versus running at sea level is that there's less available oxygen in the air at high altitude, says Kirk. (dailyburn.com)