Exercising is always important, but if you have incorrect form, you could do more harm than good for your body. Having correct form is important because it prevents injuries, increases mobility, achieves maximum results, and maintains proper posture. Many popular exercises, like planks and running, are done incorrectly, and it is smart to have a trainer or friend observe your form so you can be certain you are performing the exercises properly. The next time you exercise, make the effort to have correct form so you can receive all the benefits of your hard work.