They 'went toe-to-toe' [=competed against each other in a very exciting way] for 18 holes of golf.
They were covered 'from top to toe' [=(more commonly) 'from head to toe'] in mud.
The boss made regular inspections in order 'to keep' employees 'on their toes'.
(..) Okay, they're stopped. I need you to walk back exactly the way we came from. Very, very calmly, okay? Tread lightly. Heel, toe. Doing good. Doing great. Very slowly. Good. Come on. That's it. That's great. - Really careful. (..)2008 Journey to the Center of the Earth