What is an example of adaptive immunity? A) natural killer cells helping cells bring about their own death

B) alveolar macrophages engaging in phagocytosis in the lungs

C) neutrophils reacting to the release of inflammatory by-products

D) getting vaccinated against influenza

During the past few weeks or months, have you noticed any exercises that have become too easy for you? do you think you need to increase the intensity in any of the three exercise areas in your workouts? evaluate your exercise progress in the three exercise areas (cardiovascular, resistance, and flexibility) and list what modifications, if any, you may need to make in your exercise routine.