Straightening an arm or leg?

Straightening an arm or leg involves extending the limb so that it is in a straight line with the rest of the body. This movement requires the contraction of the muscles in the limb to lengthen and straighten it. It is a basic movement that is necessary for daily activities such as walking, reaching for objects, and lifting heavy items. Stretching or gentle exercises can help improve the flexibility and range of motion in the arms and legs, making it easier to straighten them. If there is difficulty in straightening an arm or leg, it is important to consult a healthcare professional for further evaluation and treatment.