Guys with blond hair, on average, have the largest penises. As hair color darkens, average penis size goes down; those with black hair have the smallest average penises. Guys with red hair (whom some believe have the largest penises) are actually below average in size, coming in second to last in this breakdown. Understand, though, that this is only an average correlation; many blond-haired guys reported having small penises, and many dark-haired guys reported having large ones.
Herbal remedies, Kegels (pelvic floor exercises — learn more here), and exercises have all been mentioned as potential ways to make your penis bigger. However, we’ve searched and searched for medical evidence that these techniques will work to grow your penis, but there’s simply zero, zilch, nada, no evidence. You may find lots of unverified anecdotes, which come from a sample size of one, but they simply cannot be trusted. After all, no one on the internet knows you’re a dog (or liar). We recommend that you avoid these techniques.