Final answer:
The phrase 'to get exercise' is an infinitive phrase functioning as part of a verb phrase. Physical exercise includes activities that promote health and fitness, like walking or household chores.
Step-by-step explanation:
The phrase 'to get exercise' is an infinitive phrase and in this context, it appears to be functioning as part of a verb phrase. A verb phrase can consist of a main verb along with helping or auxiliary verbs. The act of getting exercise is closely associated with physical exercise, which is any bodily activity that enhances or maintains physical fitness and good health.
Activities such as walking, swimming, running, various other sports, or household chores can all be considered forms of physical exercise. It is advised that adults engage in at least 30 minutes of moderate physical exercise daily to maintain health.