12 Ways to Work Out Like a Model in 2015

Chances are, joining a gym (or actually getting to the one you already belong to) is on your 2015 to-do list. Instead of hitting the treadmill for the umpteenth year in a row—and dropping off by mid-February—we suggest you spice up your routine instead. Here, a few ways to whip your ass (arms, legs, and abs) into shape and keep things interesting all year long.

Snap a gym selfie—and prove all the naysayers that said you wouldn’t stick to your resolution wrong