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Originally Posted by bacardi73 My total average calories is between food and drink varies between 900 and 1100. My total calories burnt is on average 2800. My basal is 1460. I have NOT been losing any weight. |
As LS stated, you're definitely not eating enough. It's not just that you shouldn't eat less than 1200 calories, it's that you shouldn't have a deficit of calories too great that it stresses your body. The main hormone responsible for stress is cortisol, a 40% drop in calories below your maintenance level will result in a 50% increase in cortisol. Cortisol stops fat burning in it's tracks. It also causes lean muscle to be wasted. It is evil in large amounts and it is to be avoided.
BMR, as LS indicated, is what your body needs to survive and be healthy, eating less than that is a sure fire way to damaging this. Most experts will tell you never to have a deficit greater than 1000 calories a day; this is where stress becomes too great.
The best way to successfully lose fat and keep it off is to eat slightly below your Maintenance level, say no more than 30% less than what you need to maintain your weight, and to increase your activities. Calorie deficits caused by exercise do not negatively impact metabolism like those created by eating less. With a total daily energy expenditure of 2800 calories, 30% less would be around 1900 calories a day. That is almost 1000 calories less. I wouldn't go much lower than that. If it's any consolation I have to eat at least that much when I am active to lose fat, otherwise it just stops. You need to find that 'sweet spot' for yourself.
I would increase my calories, if I were you, but I'd do it slowly and over the course of a few weeks.
Nat
Bmr? 
You expressed it sooo much better than I could. 
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