Over the last decade or so a popular gathering spot has been oxygen bars in cities around the country. At first, it seemed like a fad that wouldn't last very long once the novelty wore off. However, many people have realized the physical benefits oxygen can provide. People are using 99% pure oxygen for sprorts & fitness stress jet lag hangovers and altitude sickness. You can read about these topics at the website oxygen4energy.com. It's really interesting to read and learn why oxygen helps in these situations. My hubby was really intrigued by the benefits for people who are active in sports and working out. Also, there is a lot of valuable information on this website such as usage tips and testimonials. If you do not have an oxygen bar nearby, you could try recreational canned oxygen from a company like www.oxygen4energy.com to see if oxygen supplementation works well for you.