The chamber is the "staging area" for a technique. It is the place on or about the body from where a technique will begin. Essentially, there are four chambers. Two for hand movements and two for kicks.
Hand Chamber
The chamber for hand techniques is on the waist just above the hip. The hand should be in a fist and be directly below the shoulder. The wrist is flat. The fist is
upside-down, such that if you were to open the hand, you could rest a glass of water in the open palm. When one fist is chambered, the other could be out in a
technique or also chambered.
Foot Chamber
The chamber for kicks and/or foot techniques is opposite the supporting knee. The kicking knee is bent and raised so that the kicking foot is next to the supporting
knee. The bottom of the foot is parallel to the ground and the toes of the kicking foot are curled back.
You may be asking yourself why is the chambered hand always in a fist or the toes of the chambered foot always curled back. Simple. Remember that we do not want to "telegraph" our movements. We do not want our opponent to guess/know our next technique before we throw it. If your opponent sees that the toes are curled up as you bring your foot up to kick, he/she is not sure what kick you will be throwing. However, if the toes are curled down, odds are you will be executing a groin or roundhouse kick. The same holds true for the hand. If the hand is in a fist, who knows what is coming. If the hand opens, however, odds are you may be throwing a shuto of some kind or grabbing.