Listen to LeAnn Rimes on iHeartRadio

LeAnn Rimes doesn’t need to make exercise a New Year’s resolution – it seems like she’s already got a pretty good regimen going.

On Monday, the singer tweeted a shot of her rock-hard abs and wrote, “5am workout before a glutinous week. Who got up w/ me?! #healthybodyhealthymind #monday.”

READ MORE: Gossip Cop