The Egg. A doctor recommends them to gain strength.

This doctor recommends eating eggs to boost testosterone production.  He cites
a couple studies that recommend eating eggs. The major problem with that is egg yolks have a ton of cholesterol in them but he argues that the cholesterol in eggs will not elevate blood
cholesterol levels.

 I don't know the funding sources for the studies he cites but I do recommend eating eggs for muscle production although I can't really stand behind eating the yolks. I guess the only way to tell if the yolks are affecting you is to test your blood cholesterol levels frequently.