Canned Oxygen? Help!?

Canned oxygen could be dangerous to use. If there was a way such as this to just simply boost your endurance, everyone would be doing it. If you really want a supplement to help you train I would use 5 hour energy when biking. I also suggest training in high altitudes with less oxygen so your body gets used to not having to use as much oxygen to work and so when you race on lower altitudes, the amount of oxygen in the air will seem like an abundance compared to where you trained. Also, long distance does wonders for endurance.