We all know how to eat less and why it’s better for our health. It’s as simple as not taking another bite of cake. Or twenty. But even though we know how to eat less, we don’t often do it, especially this time of year when sweets and treats abound. But eating less is not just an issue about our preserving our waistline and reducing our risks of becoming obese or developing diabetes. It may also help reduce our impact on climate change and food waste.