Great article!
To this, I'd add Rhodiola Rosea given a single dose has been shown to improve both stamina and oxygen uptake:
Just one capsule of Rhodiola is enough to improve your stamina
Endurance athletes who take one capsule of Rhodiola rosea an hour before training or before a competition perform better. In 2004 physiologists at the Katholieke Universiteit Leuven in Belgium discovered that the stamina and oxygen uptake of active students rose immediately after ingesting 200 mg Rhodiola extract.
You'll find a HEFTY dose of the world's finest RR in TranQuilogen, coming soon to Predator.
MORE AT THE JUMP: http://www.ergo-log.com/justonecaprhodiola.html