Kitty has a healthy life.She eats food which are all good for her body,like fresh fruits and vegetables.She also drinks a lot of water.Those are good habits.
Ken doesn't really have a healthy life.He likes to eat sweet food,that will make him fat,actually he is fat.He doesn't eat breakfast as well,that will make him sick and he will be stomache.He never do exercise.That is even worse than eat many sweet food,because if he doesn't do excise,the fat will stay in his body.
To sum up,Kitty's life is more health than Ken.