The ice time distribution and line management for Vegas is one that I find to be very intriguing.
NHL.com - Stats
No player averaging over 20 minutes per game, and a clearly defined top 4 rotation with Nate Schmidt, Shea Theodore, Brayden McNabb, and Deryk Engelland leading the way, followed by Colin Miller, and Luca Sbisa and Jon Merrill, each appearing in half of the 16 playoff games.
From the forwards, William Karlsson leads them in ice time with a little over 17 minutes. Their fourth line is averaging 8-9 minutes of ice time.
No wonder this team has tons of energy.