There are two edges on the skate blade, the inner and outer. The space between them is called the hollow. The deeper the hollow, the more the edges dig into the ice. A lot of defensemen like this so they can be more stable when trying to move forward away from the net. A lighter hollow will give a better glide.
Goalies have their skates done with very little hollow.
They need to be able to move quickly from side to side, and can't have their edges digging in too much. After we have eaten lunch, whether it's on the road or at home, almost all of us head to bed and get whatever sleep we can before the game. Depending on the schedule and how we feel, most of us try to sleep for two hours or more. Some don't sleep, preferring to relax and rest. After we wake up, it's back to the rink to carry on our routine of getting ready for the game.