LOL Robboe, I see these myths posted daily, and they realize they are myths too! WTF!
Anyway:
"You need to keep your muscles guessing or they will just adapt to a routine and stop growing"
"All extra protein turns into fat"
"Cardio in the morning on an empty stomach is the best time to do it"
"High reps are pointless"
"You should ALWAYS train to failure"
I could go on forever, hahaha....