This intense new workout studio has something special for tricky backs.

When we heard about the new i heart fitness XO studio and its unique, butt-busting fusion workout designed by Sara Kapuchinski and her team, we were eager to get our sweat on.

But what if you have a bad back? Our tester had spinal surgery and spent years sitting out all but the most basic workouts. Good news: this killer studio has a surprise inside.

Fitness Director (and celeb trainer) Kit Rich turns out to be an expert in working with injuries. Sign up for a private lesson and she'll whip up an alternate--and no less intense--core-strengthening workout, compatible with your unique needs. You can try Rich's amazing back-friendly workout here.

Keep it up, and you could be doing the full "i heart" workout in no time. A taster: instructors are classically trained in Pilates, but classes feature a powerful mix of styles (Barre! Mat! Springboard! FitFormer machines found nowhere else in LA!). No two classes are the same, and the choreographed workouts are designed so you won't plateau.

You'll heart the way it makes you feel.

Have a friend with an injury? Another who needs a crazy-intense workout? Send them this email!