16 Halloween Costumes For the Gym *and* the After Party

Bring some of the great outdoors to your Halloween sweat sesh. All you need is a pastel workout set (we love the green shown here), and a flowery headpiece. You could also use plant-themed clips, barrettes, or jewelry to really sell the nature theme.

We love this punny play on words, and it doesn't require too much effort. Complete your gym rat transformation with a pair of ears, gym shorts, and drawn-on whiskers. Go the extra mile with a gym rat shirt, but don't feel obligated — a plain sports bra or crop top works just as well.

When in doubt, go for this classic option. The pointy hat is the key element here, but a witch costume is easy to customize for the gym — plus, it works great with any dark or sheer activewear.

Throw on some (sweat-proof) face paint and space buns for a quick-yet-spooky ensemble. You could also skip the makeup and just stick to a DIY clown outfit. We like that this version is basically just a white blouse, striped socks, and black gym shorts.

Get a group together for this unique costume idea. You'll need a black leotard and shorts for the base, and a pair of colorful butterfly wings to go over top. The antennae and glittery makeup serve as the perfect finishing touches.

This gym costume is no joke. Re-create Harley Quinn's look with mini pigtails, a baseball tee, and red gym shorts. Add some colorful triangles under your eyes (we'd argue the sweat only adds to the look) and stay away from any wayward baseball bats.

If the Purge really did happen, would you spend it in the gym? This costume is easy to make gym-friendly — all you need is black gym shorts, a black sports bra, and a white button down (fake blood optional). We're also big fans of this light-up mask . . . just make sure you can see before lifting.

Any fitness enthusiast knows early alarms hit different. Go for one of these DIY alarm costumes, and you might just secure the scariest costume in the whole gym.

Don't be wasteful. This gym costume is seriously spooky, but it doesn't take a ton of time to re-create. Dress up in scrubs or oversized athleisure (then give them a healthy dose of fake blood). We'd argue that the clinical waste bag and syringe are crucial details.

These iconic supersuits will help you channel your inner superhero and power through even the toughest of reps and sets.

Put that workout onesie to good use. Take inspiration from this literal catsuit, complete with matching cat ears and whiskers. A black workout set could also work just as well.

Give new meaning to the word "deadlift." This easy zombie costume consists of an oversized T-shirt or T-shirt dress, thigh-high socks, and optional bloody makeup. Perfect for anyone feeling like a real-life zombie.

Heat things up with this devil-inspired gym costume. All you need is some red activewear (we love this shimmery set), and a pair of devil horns.

The gang's all here! While most of these furry jumpsuits are easy to move around in, we'd recommend wearing something underneath in case you get too hot. Other than that, you really can't beat this group gym costume.

This isn't your typical Barbie costume. Make your pink workout set a little more terrifying with fake blood and arrows to represent a surgery-gone-wrong.