My advice is for you to consistently drop weight and stop it at the point where you're not at risk for high blood pressure, where you think you look OK and feel OK. And I'm advising this based on your concern about how you'll look if too light.
People like to talk bad about BMI charts and calculators and what not, but they are only guides. And these are very good guides to help you figure out where you should be when it comes to "healthy" weight. The BMI calculator tells me that I should be at 150lbs at a medium frame (I currently weigh 158lbs) and at 5'10 in height. I think this is true if I'm eating properly (I take in 2200-2300 calories a day of good food) and workout on a consistent basis (to shape/build muscle, keep body fat a low and atbay and to maintain weight loss, increase heart health - I workout 6 days a week - weight lifting, cardio, yoga and active rests). I am thin, but I am healthy and I have big muscles...I'm not frail and I look good in my clothes.
In the end, it really depends on your goals. If your goal is weight loss and to look good in your clothes then I say drop start dropping the weight (aim for 1lb per week - Google "calories in calories out") and stop when you are OK with how you look.
Keep in mind that different goals take more and different approaches.
Edited by: BLACKANDI at: 4/13/2012 (14:18)