if my bmr is 1376, and I only eat 700cals a day, how long should it take to lose a lb?

Question

i know 700cals a day is too little, but i just want to know.

Answer 1

It will take less than a week. A pound is 3500 calories. To lose a pound in 7 days, you would cut 500 calories each day from your diet. Since the 700 is 676 calories less than required, it would take about 5 days.

Answer 2

The body will go into starvation mode with so few calories. That changes the math altogether. What happens after that will depend on starting levels of nutrition and what those 700 calories come from. Too many variables to answer with any real accuracy based on just those numbers.