Fettle is the state or condition you’re in, especially if it’s positive. Being in fine fettle means feeling good, being healthy, or having an energetic approach to something. A powerful speaker who gives a particularly rousing speech is in fine fettle, and an 80-year-old marathon runner is also in fine fettle.
There are various sources to good health. But the most paramount source is when your diet is loaded with all necessary nutrients, vitamins, minerals, and proteins.
