Answer:
(1).Balance
Step-by-step explanation:
Robyn is exercising several days a week and for a long time. Now Robyn has decided to take a break and spend some time without exercising. Because of this break, we can say that Robin is working on the training principle called "Balance", where he balances his physical activity with a short rest period.
Balance is fundamental in many everyday situations, including the practice of physical activity. Too much exercise can turn what would be a healthy habit into a great risk to the body, not only to the muscles, but also to the cardiovascular system.