This coming Sunday will mark 25 years in charge of United for Ferguson, the Scot having achieved remarkable success since taking over the post back in 1986.
Ferguson, 69, has won 12 Premier League titles, the FA Cup on five occasions and also lifted the European Cup twice during his time in charge at Old Trafford.
And Hernandez, who joined United from Guadalajara in 2010 and went on to claim league glory in his debut campaign, has been inspired by the ever-lasting hunger for success demonstrated by the Scot.
"He is completely different," Hernandez told Inside United. "You can't compare him to anybody else. What has impressed me most about him, and this is something I have noticed from the first day I met him, is that he is a very simple person.
"You can talk about all the things he has won and all the years he's been in charge but you wouldn't know it if you watched him on the bench.
"Every game looks like it is his first. He is so excited. So enthusiastic. He wants to win so much. That is the key. He will never get bored of winning and he enjoys what he does.
"Every day he will ask me how I am feeling, whether I am OK and whether I need anything. He is just an unbelievable person. He recognises that first you are a human being and then you are a football player."