Approximately 60% of total body weight is water. being adequately hydrated an athlete: regulate body temperature, transport nutrients, allows the heart to pump more easily, all of the above

all of the above because we humans need hydration or we will die and you could survive longer if we had only water then only food

because the body runs on fluids

eating disorders is a fatal illnesses that cause severe disturbances to a person's eating behaviors. obsessions with food, body weight, and shape may also signal an eating disorder. common eating disorders include anorexia nervosa, bulimia nervosa, and binge-eating disorder.