Energy is one thing that the 'Glee' guys are never lacking on-screen, and there's a reason for that -- off-screen they're all about napping. Or at least they are in this Twitter pic Chord Overstreet shared.

"Takin a nap on set!" he tweeted.

Although their characters may not be too chummy when walking the halls of William McKinley high, off-screen Overstreet, Chris Colfer and Mark Salling's bromance his hard to hide.

After the drama of last night's 'Glee' prom episode, we can only imagine that the guys needed a little rest and relaxation between the emotional takes. But we can't wait to see where the final episodes take our favorite 'Glee' guys.

Rest up fellows because we're sure to have a lot of questions for you when the season finale curtain drops.