Well the hormone would be one thing. I'd say because it strengthens our heart muscles and trains our breathing pattern to be more effective. These would lead to more efficient transportation of blood and hence oxygen to our whole body including our brain. Our brain becomes more alert, and our body more energetic.
It would be A because when you are younger you want to have a higher heart rate while working out.
1: Family members or significant others that reports and respond to interviews.
2: Members of the health care team.
3: Medical record information
4: The patient, through interview, observations, and physical examination
& 5: Scientific literature.
PUVA is used to treat severe skin diseases by using photochemotherapy. One example would be psoriasis.
