Answer:
Better peer relationships
Explanation:
Barney and Marshall are doing great physical exercises that will improve their physical and mental health. Both Barney's and Marshall's physical practice are great healthy options to better your body, be more disposed of, and prevent a range of illnesses. However, Barney practices his physical activity on his own, so does not establish friendly relationships with anyone. On the other hand, Marshall practices his group physical activity, establishing better peer relations.
