Solskjaer wants Rashford to continue to develop his heading after he nodded home a fine goal in Thursday's win over Newcastle United.
"He is a physical specimen. He's looking after himself, working hard in the gym," Solskjaer told a news conference.
"When you've got that spring, it's just about having courage and getting up there.
"I remember a boy I used to play with that used to head it quite well when he was close to goal. And we compare them quite often.
"So, that's another string to his bow Marcus that Cristiano used to get when he was getting to that age as well."