It is critical that we warm up properly before exercising. And the (very) old school method of static stretching is not the proper way. Save the static stretching for after the workout. What we need to do is called dynamic stretching as a way to prepare our body for exercise. Linked below is an excellent pre-workout dynamic stretching routine, presented by my very good friend, Mike Dean of MAD Fitness. Please feel free to visit and Like his new YouTube channel.