|By User:AndonicO (Own work. Edit by Digon3)|
or CC-BY-2.5 (http://creativecommons.org/licenses/by/2.5)],
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Y U SO SEX-AY?
Walnuts contain the amino acid arginine, which is known to be helpful in numerous ways, among them, improving "athletic performance." (Nudge, nudge. Wink, wink.) (OK, so as a natural Viagra, it's not exactly a libido starter, but damn; W's a hard letter, y'all!)
Don't overdo it with the walnuts, though; too much arginine in your system can be problematic for some folks.
Click here for more on walnuts.