I don't think anyone would be surprised to know that CARRIE UNDERWOOD takes her leg workouts very seriously. She gets sweaty with a personal trainer several days a week and they do some crazy stuff.


We're talking cherry pickers, skater hops, lateral lunges and the always popular pulsing sumo squats. She's also not afraid to toss around 5- to 15-pound kettlebells.


The routine is featured on Glamour.com. You can check it out here.  It's a slide show of her doing different exercises on each page. 


Speaking of Carrie: She posted a cute Vine on Twitter of her dog licking her face while she's in the driver's seat. She wrote, "My navigator . . . who needs a GPS?"