Can't fight when you are out cold because you started hyperventilating. Might seem silly but I'm quite certain that our military spends a lot of time, effort and money making sure people like fighter pilots and snipers use best practices that allow them to perform at maximum capability.
Consider this your little tax payer "return on investment".
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LawnDartLeo
Intel Core i5-2500K Sandy Bridge 3.3GHz CPU (oc'd 4.3)
Cooler Master Hyper 212 Plus Heat Sink
G.Skill Ripjaws X Series (2 x 2GB) RAM
Gigabyte GA-Z68XP-UD3 Motherboard
Windows 7 Professional O/S
Western Digital Caviar Black 1TB 7200 RPM Hard Disk
Gigabyte GV-N570OC-13I Rev2.0 GeForce GTX 570 1280MB Video Card
Corsair Gaming Series GS600 600W Power Supply