Warming Up
Instructors, trainers, physical therapists and athletes all reccommend a solid warm-up before any type of workout; in a discipline like Taekwondo, warming up is critical, given the need for flexibility as well as cardiovascular endurance and muscular strength.  A warm up serves two basic purposes:

- It lubricates joints, preparing them for vigorous motion
- It heats up muscles, relaxing them, making them more elastic, and charging them
   with oxygen by stimulating blood flow.

There are probably hundreds of stretches and calisthenic excersices that would be effective in Taekwondo practice.  Generally speaking, the more stretches and calisthenics you know, the better.  Strong and flexible legs, strong abdominals, a strong a flexible back, and a powerful chest and arms will all help improve your Taekwondo.  Many of the stretches found in yoga can also be extremely beneficial in Taekwondo, both for stretching and for therapy to overused muscles.

You need to chose the excerises that suit you best and confer the most important general advantages: heighting respiration, a relaxed body, and strong muscles, especially the abdominals, the pectorals, and the lower back (the techniques in Taekwondo will strengthen the legs and arms).
General Loosening

Neck Rotation
Shoulder Rotation
Shoulder Stretch
Arm Rotation
Chest Stretch
Trunk Twist
Side Stretch
Hip Rotation
Upper-Body Rotation
Knee Rotations
Knee Bends
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