Answer:
engage in regular physical activity
Explanation:
the others are too specific and dumb
Cancer would definitely need to be focussed on, air pollution is a known cause of cancer
Because semen swims upstream. The bladder is not located above the vagina (internally). If the ejaculation takes place in the vagina, the semen will swim up towards the cervix.
Training too many times a week and not letting your body rest.
You're aorta pumps blood from your left ventricle into your body.