A good rule of thumb is that below 20 miles a week you should not increase your weekly mileage by more than 2 miles a week; above 20 miles a week, you should not increase your weekly mileage by more than 10% a week.
At 230 calorie per cup of cooked lentils, lentils fall in the same range as cooked brown rice, potatoes and bananas. Some fats like butter, oils, nuts and meat are higher in calories, while non-starchy vegetables contain fewer calories per serving.
To boil lentils, use three cups of liquid for each cup of lentils. Placed in already boiling water, lentils will be easier to digest than those that were brought to a boil with the water. When the water returns to a boil, turn down the heat to simmer and cover. Green lentils usually take 30 to 45 minutes to cook, while red lentils require 10 to 20 minutes.