Battle of the guns! Derek Hough and Apolo Ohno flaunt their bodies... while Bristol Palin bares her legs ahead of DWTS live show

There's been a lot of exhibition going on behind the scenes of Dancing with The Stars: All Stars lately.
It seemed like Derek Hough and Apolo Ohno were seeing who could show off their taut bodies the most before the live show got underway on Monday.
Apolo took to Twitter on Sunday after a knock-out kickboxing session to post a picture of himself - flexing his muscular arms.

 

Look at those guns: Apolo Ohno took to Twitter to post a picture of himself at the gym flexing his muscular arms

Along with the pumped up photo, Apolo tweeted: 'Sweat it out. Kickboxing cross training.'
The Olympic medalist wore a black tank top, black trousers and gray knit cap and seemed to be unraveling black bandages from his left hand.
Apolo looked rough and tough with those bulging biceps, but he had some huge competition from Derek Hough the following day.

Derek was spotted shirtless and strutting around the Los Angeles studio following rehearsals, wearing nothing else but his black jeans, a belt and his white-laced trainers.

 

Look out Apolo! Derek Hough showed some tough competition, strolling around the studio without his shirt on before the live show

The dance professional was an awesome sight to behold with his muscular bare chest, chiseled arms and six-pack abdomen.

Derek's hair was perfectly styled too with a feathered layered look, presumably in preparation for the live show.
Two female friends stopped to chat with the dancer, perhaps to get a closer look, and Derek seemed to love every minute of their fawning attention.

 

 

Toned: All those tough dance rehearsals are paying off for Derek, who is pictured here showing off his muscular frame

 

Hey good looking! Derek stops to chat with a couple of admiring female friends on the set of DWTS: All Stars

Bristol Palin who was seen flashing her bare legs in red athletic shorts.

With shapely legs like those, who wouldn't want to show them off.
Bristol, who also wore a more concealing black top, obviously had put in a good workout during rehearsal with her dance partner, Mark Ballas.

 

She's got legs: Bristol Palin flashes her shapely limbs in red shorts after spending hours rehearsing before the big show

 

The reality star was glowing with perspiration and carried a large water bottle, along with her keys and handbag.
Her long brown hair was high up in a ponytail and she was smiling, so it must have been a good rehearsal.
Bristol's has been putting in a lot of hard work into her dancing to raise her scores.