The couple that works out together is usually bangin' hot!

Hilary Duff and her sexy hockey player hubby Mike Comrie hit the gym together for a nice long couples workout sesh in West Hollywood.

The Beauty and the Briefcase star and her man have been working up a sweat with celebrity fitness guru Harley Pasternak, and he's definitely kicking their butts!

Duff posted on her Twitter after her workout: “Trying to train [me and Mike] today was not easy! We were troublemakers!”

The couple has been married nine months, but Duff still has that newlywed glow!

Find out what the star's hubby did recently to surprise her, after the jump ...