Quote Originally Posted by maillotpois

Just as training at high altitudes improves your oxygen uptake capacity
for riding in the lowlands....
This statement is absolutely true, but what a lot of studies are pointing to now is "Train Low, Sleep High". Your recovery is severly slowed down at altitude. If you train low, you can get more training in, recover faster so you can get more training in etc.

I've been doing a lot of research on this topic because I live in Wi (flat as a pancake) and I'll be racing in at a Norba Nationals event in CO this summer (elevation 8500-10,000 feet...yikes) . So if anyone has any experience with this, I'd like to hear your stories. Perhaps I'll post this on another thread.

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Quote Originally Posted by maillotpois
CO2 is heavier than air, you will make your bike heavy and slow if you
use it. Helium is lighter, the only way to go if you want speed and
safety.

If you are willing to live dangerously, Hydrogen is lighter and cheaper
than Helium, but don't smoke while riding your bike if you use
Hydrogen...
Are there really people that fill their bike tires up with Hydrogen and Helium? I've never heard of this... What is the weight savings on a 40psi mountain tire Helium vs CO2 (If you are not sure, maybe I'll try to figure it out later....I on lunch, but gotta head back to work now...)

I've never heard of this, so it kinda blows my mind!