Final answer:
Tony is applying the training principle of variety by adding rollerblading to his regular bike riding routine. This provides different benefits and promotes overall fitness and skill development.
Step-by-step explanation:
Tony is applying the training principle of variety by adding rollerblading to his regular bike riding routine.
By incorporating rollerblading into his routine, Tony is introducing a different form of exercise that targets different muscles and movement patterns. This helps prevent boredom, reduces the risk of overuse injuries, and promotes overall fitness and skill development.
Additionally, rollerblading can provide a cardiovascular workout, improve balance and coordination, and offer a change of scenery and environment for Tony's exercise routine. Cross-training involves engaging in different forms of exercise to improve overall performance, reduce the risk of injury, and maintain a high level of motivation by varying workout routines. By adding rollerblading, Tony is not only working different muscle groups, but he is also adding variety to his workouts, which could lead to improved fitness levels and reduced boredom with exercise.