Whenever my energy level is inexplicably low as it was on a hike last week, I consume more of the good fats. We get our energy either from carbohydrates or fat.

And now that I eat very few carbs to control my blood glucose level and my weight, I need to get most of my energy from the fat in my diet. But sometimes in my quest to control my weight I don't get enough of either.

Big mistake.

But what are the good fats? They are those with the highest proportion of monounsaturated fatty acids,...