What is the speaker mainly talking about?

Just because you’re on a diet doesn’t mean you can’t snack. In fact, eating between meals is important for weight loss; the diet we’re putting you on emphasizes numerous small meals over fewer large meals. Snacking will give you the energy you need and help satisfy your hunger. But choose your snacks wisely. Munch on fruits or vegetables when you get the urge. They provide vitamins and are good for your digestion. Remember: "eat little and eat often" works as a philosophy that will lead you back to health.