During exercise, an individual's heart rate tends to increase steadily until a level of consistent intensity has been reached. Correct answer:C Afterwards the heart rate decreases back to normal.
As a result of increased exercisethe volume of blood pumped by the heart increases
Go to the gym or join waight watchers
Answer:
to get the energy they need for short bursts of intense activity.
Answer:
ovulation, fertilization, and implantation
development of an embryo and then a fetus
contractions of the uterus and dilation of the cervix
birth of the baby
expulsion of the placenta and cutting the umbilical cord