Morning. Salt water splashes me awake. The sun, a sliver of orange, begins to smile over our ship. Orange, citrus, I think. Breakfast time. I draw a firm grapefruit from my pack. I peel back its skin ...

Let’s face facts, sticking to a nutritious diet–whether it’s to manage weight or just to be healthier–isn’t easy. The one thing that all experts agree can be a big help is to write down what you eat ...

Registered dietitian Anna Smith on eating within a calorie deficit for weight loss, and how much flexibility you really have from one day to the next.