Any beauty girl can relate to the struggle of "Should I go to the gym, or should I keep my bouncy, smooth -- and pricey -- blowout intact?" In fact, we've used the excuse, "Sorry, I just had my hair done," on more than one occasion to avoid a killer cardio workout.

Anna Kaiser, celebrity trainer and founder of AKT InMotion, suggests strength training on good-hair days. "You can push yourself in a strength workout in a cool room and still get a great workout," she says. And you'll avoid excessive, hair-ruining sweat.

To help solve flat hair, breakouts and all of your other post-workout beauty problems, we enlisted the help of New York City dermatologist Doris Day, MD, and hair expert Theresa Adams of Dop Dop Salon in New York City. Read this and you won't have any excuses not to hit the gym. (Sorry!)

The Solution: Nothing ruins a post-gym high quite like the feeling of a fresh pimple working its way to your skin's surface. Any sign of blemishes and suddenly your vow to exercise daily is overridden by your mission to keep your skin clear. According to Day, it's not just your makeup that's causing your breakouts. "When perspiration mixes with your makeup and other bacteria you pick up at the gym, say from your yoga mat, it creates clogged pores which can potentially lead to acne." Meaning it's more important to keep your fingers that were touching that germy gym equipment off your face than it is to avoid makeup all together.

Day also says to be wary of what you use to hold back your hair. "Headbands can exacerbate [breakouts around the hairline] by trapping perspiration and bacteria against the skin," she says. Instead, hair stylist Theresa Adams suggests keeping the hair back with a large clip or bobby pins.

The Solution: If you refuse to step outside without a little liquid courage (we're talking about foundation), Day says to stick with something light like the new BareMinerals Complexion Rescue Tinted Hydrating Gel Cream, $29, or Chanel Vitalumière Aqua Ultra-Light Skin Perfecting Sunscreen Makeup, $47. Both provide lightweight coverage, but are non-comedogenic and oil-free to keep pores from becoming clogged.

By doing this, Day says you can avoid having to start from scratch and redoing your whole skin care routine post-workout. Just splash some cold water on your face, let it air dry (or blot with a paper towel -- but avoid using the cloth towel you used to soak up sweat) and you can apply the rest of your makeup for the day, or head out as is.

The Solution: If your biggest concern is having to shower and restyle your hair, Adams and Kaiser agree: Stay away from workouts like spin class or hot yoga that promote major sweat.

Otherwise, opt for styles with staying power. "Knot braids or Dutch braids will keep your hair back and looking neat, so you can begin your day after working out," Adams explains. For days when you want to wear your hair down after a workout (or wear it looser while you're exercising), keep the hair in a loose twist, securing with a clip to avoid ponytail lines, and use dry shampoo or dry texturizing spray (depending on your hair thickness) to revive your style post-workout.

"Make sure the hair is dry first," Adams cautions, as spraying dry shampoo onto wet hair will just create a pasty mess.

Adams prefers dry shampoo for finer hair textures (we like Batiste, $5.99). "Hold the can eight to 10 inches away from the head -- it should change color at first," says Adams. "Leave it alone for a couple of minutes, then just shake it [through your hair] or brush it out."

For curlier hair, go with a dry texturizing spray like Blow Pro Textstyle Dry Texture Spray, $19.75, which Adams says will "soak up some of the excess oil and add texture, without leaving the hair frizzy."

The Solution: The obvious answer here is to get a gel manicure, which is essentially indestructible for two weeks. But if regular gel manis aren't in your budget or the removal process is too much of a headache, preserving regular polish is as simple as finding the right top coat.

Nails Inc. Gel Effect Top Coat with Kensington Caviar, $15, is a miracle worker that will leave your polish chip free while strengthening your nails against breakage and adding a glossy shine. For extra protection, you can reapply before you head to the gym.