It could be to avoid injuries. One reason why there are several rules in
exercising is to ensure that a person will not get injured during a
workout. Injuries can occur when one is
either handling too much weight, doing the exercise wrong, not using proper
equipment or does not have a partner or trainer assisting him.
The diaphragm divides the ventral cavity into two parts by separating the thoracic cavity and the abdominal cavity. It is a flat muscular sheet that is bounded by the chest wall, and an inferior abdominopelvic <span>cavity. </span><span>I hope my answer has come to your help. God bless and have a nice day ahead!</span><span>
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Wll first of all start a little hard to see how much would be the most your friend can do and then go slowly so that the muscle gets used to fast movement but especially with a correct diet that must follow step by step.
I hope this works for you
