Warming Up, Stretching and Calisthenics Exercises.

General Principles:
1. Always warm up before stretching.
2. Be aware which muscles are being stretched.
3. Breathe, maintain controlled breathing when stretching.
4. Don't Bounce when stretching.
5. Maintain good form when stretching.
6. Avoid extreme range of motion.
7. "No Pain, No Gain" not true anymore, should be "No Challenge, No Growth" or "No Stress, No Training".
8. Knee rotation used to stretch bands on side of joint.
9. Knee bends.
10. Thigh stretch (after we do side to side we then do this form).
11. Neck warm up, keep shoulders down and relaxed.
12. Gassho, isometric exercise, aimed at the muscles on the underside of the arms, and secondarily the pectoral muscles.
13. Finger Tips, this exercise is very specific to karate, relax shoulders, try to keep even pressure on all fingers, promotes strong grip. 
14. Wrist rotation, range of motion exercise, aimed at maintaining mobility and flexibility in the wrist joint, move wrist to a wide circle.
15. Push-ups, a great all around strength builder and done with many variations.
16. Sit-ups, strong abdominal muscles are very important to general well being. The are the most powerful muscle group in the body.