Back to Home

Active Questions

I want to lose 10 lbs in 1 week? Is it do able?
Diet & Health / 6:40 PM - Wednesday March 06, 2013


- Asked by Female, 36-45

Read more about the Rating System

Well, you really should consult your health care provider. It depends how much weight you need to lose overall. Are you trying to lose water or fat? Drink at least eight glasses of water. Eat six to eight smaller meals. Cut out carbs, fats and sugars. Try a detox from GNC or somewhere similar. You'll also need to brisk walk or jog for an hour a day.


Rating Received:

Thats very lose 10 pounds in a week.I know thats not what you wanna hear but it is the truth.


Rating Received:

Community Rating: Community Star

According to one of my textbooks, 1g of fat contains roughly 9.4kcal. That means that 1kg of fat (2.2lb) is 9,400kcal. That means that 4.5kg (10lb) of fat is roughly 42,300kcal.

Now, the average adult (according to the statistics on the side of my cereal boxes, which I assume are inaccurate) consumes 2,400kcal/day, which is 16,800kcal in a week.

Mass is condenced energy, and calories are a measure of heat (which allows us to measure energy), so to lose 10lb of fat your body has to expend 42,300kcal more than it's given. 16,800-42,300kcal=-25,5 00/week, or -3,643kcal/day. Obviously, you can't consume a negative amount of calories, so even if you consumed 0kcal/day (which I strongly recommend against), you'd still have to increase your activity by 3,643kcal worth each day. If you actually eat (which I do recommend), it would be more than that.

The average person, according to nutrition and body composition expert Lyle McDonald (not to be confused with Ronald), can consistently burn about 5-10kcal/min of moderate intensity activity, which yields 300-600kcal/hour. You're looking at just over 3,600kcal, so we're talking 6-12 hours of exercise per day. That's before we do anything to neutralise the amount of food going into your mouth. If you consume 2,400kcal/day, then that's another 2,400kcal that needs burning, so we're talking an extra 4-8 hours of exercise. All up, that's 10-20 hours of exercise per day, for a week. Sound doable?

Now, can you make the scale drop by 10lb in a week? Yes. Will you have lost 10lb of fat? Extremely doubtful.


Rating Received:

Not possible, that I've found. Because its just water weight. But working out harder/longer and eating protein packed fewer calories is my best bet for you to see how much you can lose.


Rating Received:

I've done it-- rode my bike 30-50 miles at a time and ate only plain macaroni and watermelon.


Rating Received: