<human>:  What is the best way to keep a healthy diet?
<bot>: The best way to keep a healthy diet is to eat a balanced and varied diet with plenty of fruits and vegetables, lean proteins, and whole grains. Be sure to limit highly processed and high-sugar foods, as well as unhealthy fats, like trans fats. Drink plenty of water and get plenty of physical activity. Making lifestyle changes like this can prevent chronic illnesses and help you maintain a healthy weight.