Selena Gomez & Justin Bieber Working Their Relationship To The Core

Selena Gomez and Justin Bieber were hot and sweaty for each other yesterday afternoon, but it was likely only because of the pilates class they just left.

Fresh off a New Year's trip to Cabo San Lucas, the back-on couple looked like they needed some water leaving their West Hollywood hot pilates class after an intense workout.

They've been enjoying a much healthier and active lifestyle since getting back together a couple of months ago. Selena's often on the sidelines watching Bieber's hockey games, but in all they are back and even look more in love! Happy for them?