Given my age, genetics, height and bone structure, which are: 67, ectomorph, 5'11" and medium to large boned, I believe my ideal weight is somewhere between 180 and 190 lbs. Presently, I am not at my ideal. In my adult life, I have weighed as little as 155 lbs and as much as 225 lbs. Losing weight has not been much of a problem for me, while trying to maintain 225 lbs. meant that I was stuffing my face with food all the time and never skipping a workout.