As beauty lovers, we can all agree that a swipe of lip gloss or mascara can instantly boost one's confidence. And more confidence equals more energy. This is especially true when you hit the gym (especially if there are any hotties that you may have your eye on). Now, we're not saying you need to spackle on a full face of makeup or pull out designer duds for spin class, but looking good can translate into feeling good and getting a better workout. Here are some easy, sweat-proof ways to look great for the gym.