This is one of those things many people argue about. Some insist you can’t, and rely heavily on BMI as an indicator. But from what I understand of it, the BMI is really not an indicator of health or fitness.
I’ve long felt that one can be both fit and fat. I’m not a medical or fitness professional, just someone with a lot of opinions on the matter, but there it is.
You can see an indication of that in this abstract in JAMA. Fitness was the best mortality predictor, not weight.
That really doesn’t surprise me.
I’m not fat, except maybe by Hollywood standards. 5 foot 7 inches, 140 pounds. A BMI calculator puts me at 21.9, or midrange normal. But my sisters would generally fall into the overweight or obese sections of the BMI chart. But I think at least 2 of them are more fit than I am. It’s not that I’m in that poor of shape; it’s just that I suspect they’re in better shape.
To me this is something you should think about, especially if your New Year’s Resolution is to lose weight. A better resolution, perhaps, is to simply get more fit.
This is hard to deal with, especially when you go out into the real world, and all they see is fat. My sisters and I have had frank talks about this very topic. Back when we were all single, I had the advantage of being the thin one. But none of us were that worried about weight. We were having too much fun.
As you work towards your fitness goals, do your best to remember that fitness goals are in many ways better for you than weight goals. It’s not an easy change to make, but it could help you make more achievable goals.