Lets be honest, we can all be a little guilty of skipping warm-ups and cool downs, even though we know we shouldnt. And while we know stretching after exercise helps to reduce injury and aches, did you know that warming up efficiently before a workout actually makes the workout easier. How? Stretching dynamically pre workout, in similar movement patterns to those youre about to perform, means your muscles will be more elastic and the blood will already be flowing. Stick to dynamic stretches before a workout and static ones after, Dave adds.