Answer:
Eating disorder
A condition characterized by irregular or abnormal eating habits.
A. HIV is a sexually transmitted diseases and its called Human immune virus.
The heart is an example of an organ or a muscle.
Hope i helpedXD <span />
You didn't provide a graph? Generally, when we're talking about homeostatis, we're talking about the neutral state of the body during which it can function optimally. If you've provided a graph which involves the human body under an intense workload, then we can be sure that during this period the body isn't under homeostasis.