Cats are naturally athletic but tend to become more sedentary with age, leading to health problems. Playing with cats through activities like using toy wands, chasing strings or balls, or a game of kitty soccer can help encourage exercise. Simple toys that don't pose choking hazards, like crumpled paper or pom-poms on springs, can also provide solo play and exercise for cats. It's important to choose activities appropriate to each cat's fitness level and stop play if they seem tired.