Carlos wants to participate in a physical activity that will best improve his heart function. which type of activity should he choose?

muscle-strengthening

bone-strengthening

balance and stretching

aerobic

If scientists are trying to use what they know about hsv to devise a means of protecting other people from being infected, which of the following would have the best chance of lowering the number of new cases of infection? a) vaccinate of all persons with preexisting cases of hsvb) interfere with new viral replication in preexisting cases of hsvc) treat hsv lesions to shorten the breakoutd) educate people about avoiding sources of infection