PostureWhen you are singing, it is important to hold your body in the right way. In other words, you need to have the correct posture. This correct posture (see picture 1) means that the profile of your back should be in a natural S-shape. A vertical line should run from your ear, through your shoulder and hip, before ending at your ankle.
In this way, you can stand upright, breath, speak and sing with a minimum of effort. In any deviation from the posture shown in figure 1 your muscles cannot work together ideally. As a result, you will need to make a greater effort to stand up straight, keep your balance, speak, breath and sing. In the long term you will also find it harder to keep your bones, joints and intestines in a healthy condition.
The following posture is also seen regularly, but is not ideal.
 In this case, the arching at the bottom of the back is too pronounced. As a result, the pelvis tilts forwards. This means that the muscles attached to the midriff pull downwards, making breathing more difficult. The knees are put under strain, because of the high level of tension in the leg muscles.
 The head is pushed forward because there is a kink in the neck. This places pressure on the larynx, so that it cannot move optimally when you are speaking or singing. The sternum (chest bone) is pushed downwards, so that the lungs are compressed. The upper back is too curved and the pelvis tilts backwards. The knees often have a pronounced bend. The overall effect is that many of the key singing muscles are too loose.
 Here the back is too straight. The natural S-shape has disappeared completely. It is very difficult to achieve good control of the abdominal muscles with this posture. It is a very tight, stiff posture, which makes any kind of mobility more difficult.