If you hate squats, chances are you're not a fan of lunges, either. But don't skip out on this move! Along with working your lower body, lunges also challenge your balance and core. When you lunge, make sure that your lowered knee doesn't touch the floor and also keep the upper knee parallel with your ankle, not past it. Read more on how to perfect different types of lunges here. One of our faves is the curtsy lunge — it's great for toning your bum.