Core conditioning looks to improve A. stability that comes from the trunk and spine<span>. The core of the body is essential in maintaining correct posture, and also helps to stabilize the body. The muscles of the core include the abdomen and the lower back, both of which are essential in many activities ranging from walking upright to laying down.</span>
B. Kidneys - they extract waste from blood and balance body fluids
Negative symptoms include blunting of affect, poverty of speech and thought, apathy, anhedonia, reduced social drive, loss of motivation, lack of social interest, and inattention to social or cognitive input.
D because when you move the weights at a good speed you will not risk tearing any muscles