If you aren't tailoring your warmups to match the mechanics of application and technique you may be wasting an opportunity to make more progress in less time. Whether you are teaching a class or just preparing for your own training there is a lot more you can do with a warmup than just touching your toes and doing a few lame jumping jacks. A good warmup will increase the heart rate, speed blood flow, increase the respiration rate, raise muscle temperature, and stimulate fluids to lubricate the joints. It should start with simple, multi-joint movements that do not require much coordination. The intensity should start low and gradually increase. You will know that your warmup is working when your students start sweating. I usually start my classes with fo...