Did you know that corn flakes were actually created to help control sexual urges?
Way back in 1898, Dr. John Harvey Kellogg was the superintendent of a mental hospital in Michigan.
[Discover the muscle building secrets of the great old time strongman too]
He was a religious man and he certainly didn't want the patients in his mental hospital running around trying to screw each other.
He noticed that corn flakes LOWERED his patients sex drives. So he fed his patients corn flakes every morning to keep them "under control."
Turns out the reason corn flakes kills your sex drive is because corn flakes and other grain products can actually LOWER your testosterone levels.
Not good for anyone trying to build muscle or get lean.
On the other hand, certain foods have been shown to BOOST your sex drive and also your testosterone levels.
One of those foods is eggs. The yolk of an egg contains a high level of arachidonic acid -- which helps your body produce muscle-building and fat-burning hormones.
So if you want to get lean and muscular, ditch the corn flakes and start your day with some eggs -- be sure to eat the yolks too.
If you're serious about getting lean and muscular, there's another "sinful" food you should start consuming on a regular basis. It's revealed on page 54 of Matt Marshall's book How To Build A Classic Physique.