BODY FAT PERCENTAGE

pollyineedtobeskinny
pollyineedtobeskinny Posts: 362
in Health and Weight Loss
I have just calculated my body fat percentage on www.fat2fitradio.com and it came up that my body fat percentage is -8.4%.
Is this correct? I'm not too sure how it works.

I then calculated my BMR -

Entered information: 19 year old female, 63 inches tall, weighing 142 pounds.

From the information that you entered, you'd like to weigh 120 lbs.

I would say I'd select "Light Activity" for my activity level which claims I should eat 1903 calories a day, does this seem too high for me?

Need some help on body fat percentage!

What is your body fat % and how many calories do you eat a day?

Replies

  • okeedokee5
    okeedokee5 Posts: 46 Member
    That can't be right. I am 62 inches tall, weigh 145, and my body fat percentage was at 28% in October. My trainer calculates my percentage using some fancy ultrasound thing, so it isn't an online calculator. Essential fat percentage for women is 11%. Lower than that and you start messing up your menstrual cycle... So being in the negative numbers isn't possible.

    1903 calories may be correct for maintenance. If you want to lose, subtract about 15% from that number. That's what you would eat to lose reasonably, irregardless of exercising. Also, with only 20 pounds to lose, remember it might be a slow process. You should only bank on losing half a pound to maybe a pound a week.
  • GauchoMark
    GauchoMark Posts: 1,804 Member
    doesn't matter what the number is, a negative BF% is wrong. Also, a female with 8% BF would be pretty shredded. Just looking at your pics and the stats you gave, I'd say you are in the range of 30-35%.

    As far as calories go, your BMR is 1472. This is the minimum amount of food your body needs per day for your organs to function without any physical movement. I prefer to use the sedentary setting, then just log exercise. If you did that, your TDEE would be 1766 per day, which is how many calories you need to MAINTAIN your weight. From that you would subtract your calorie deficit so you lose weight. For you, I would probably stick to 0.5 lb/wk, which is a 250 calorie deficit, so would would eat 1516 cal/day + whatever exercise you log. (you want to eat back any calories you burn from exercise.

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