One pound of weight = How many calories burnt?

Will that 'one pound' lost be all body fat though?

Probably not. I believe it is usually 75% fat lost and 25% lean muscle mass lost for the average person on a calorie reduced diet or doing strictly cardio. The percentage of muscle lost can be decreased greatly by strength training. Sometimes it is even possible to increase lean muscle mas while losing fat.

If you're losing 25% lean muscle and 75% fat, then 2775 cal corresponds to 1 lb weight loss. That is 25% * 600 + 75% * 3500 (with 1 lb of muscle being metabolised to 600 cal). This is why maintaining muscle mass when losing significant weight is important.

Reference: http://www.submityourarticle.com/articles/Tom-Venuto-367/calories-20436.php .

I work for a dietitian and we had this info floating around on our computer for patients...so thought I would share.

Weight Gain or Loss:
What Equals 1 Pound?

Most people know that it is not hard put on 1 pound (lb) of weight. You have to take in 3500 calories more than what you expend through activity and normal metabolism to gain 1 lb. Likewise, you either have to take in 3500 calories less than you burn off in order to lose a pound.

Losing or gaining 1 lb
So, how do those 3500 calories break down? The answers might surprise you.

The following foods contain approximately 3500 calories:

6 portions of chicken pot pie (homemade), (one piece=⅓ of a 9″ pie)
6 cheeseburgers (large), six burgers (fast-food style)
7 roast beef and cheese sandwiches (fast-food style)
8 slices of cheesecake (slice=1/12 of 9″ pie)
8 cups (C) of chicken salad (homemade)
8 sausage-and-egg muffin sandwiches (fast-food style)
9 slices of apple pie (homemade) (slice=1/8 of 9″ pie)
9 C of macaroni and cheese (from mix)
10 C of vanilla ice cream (rich)
10 chocolate milk shakes (10-ounce [oz] shake)
10 C of nonalcoholic eggnog
10 C of potato salad
12 Snickers® candy bars (2.16-oz size)
15 packets of M&M’s® (1.69-oz size)
16 C of long-grain rice
17 potatoes
18 cake doughnuts
18 strawberry Pop-Tarts®
18 C of enriched pasta
19 beef franks (2-oz franks)
19 slices of pepperoni pizza (1 slice=1/8 of 12″ pie)
21 oz of dry roasted almonds
22 servings of sour cream-and-onion potato chips (14 chips/serving)
22 C of whole milk
23 cans of cola or beer
25 C of chicken noodle soup
31 oz of cheddar cheese
34 C of corn flakes (without milk)
35 glasses (8 fluid ounces) of Kool-Aid®
37 tablespoons of peanut butter
39 containers of lite yogurt (6-oz containers)
43 apples (medium)
44 Oreo® cookies
45 fish sticks
50 C of carrots (boiled)
50 eggs
53 oz of pork chops (braised)
69 C of watermelon
71 oz of chicken breasts (skinless)
73 links of sausage
80 C of broccoli (boiled)
95 peaches (medium)
350 C of loose-leaf lettuce (shredded)
955 spears of asparagus
A person weighing 150 lb can burn 3500 calories in the following ways:

13 hours of walking at 3.5 miles per hour (mph)
12.2 hours of water aerobics
8 hours of vigorous weight training
7 hours of high-impact aerobics
6 hours of bicycling at a moderate pace
5 hours of jumping rope at a moderate pace
5 hours of running at 6 mph
5 hours of swimming freestyle at a fast pace

I work for a dietitian and we had this info floating around on our computer for patients...so thought I would share.

Weight Gain or Loss:
What Equals 1 Pound?

Most people know that it is not hard put on 1 pound (lb) of weight. You have to take in 3500 calories more than what you expend through activity and normal metabolism to gain 1 lb. Likewise, you either have to take in 3500 calories less than you burn off in order to lose a pound.

Losing or gaining 1 lb
So, how do those 3500 calories break down? The answers might surprise you.

The following foods contain approximately 3500 calories:

6 portions of chicken pot pie (homemade), (one piece=⅓ of a 9″ pie)
6 cheeseburgers (large), six burgers (fast-food style)
7 roast beef and cheese sandwiches (fast-food style)
8 slices of cheesecake (slice=1/12 of 9″ pie)
8 cups (C) of chicken salad (homemade)
8 sausage-and-egg muffin sandwiches (fast-food style)
9 slices of apple pie (homemade) (slice=1/8 of 9″ pie)
9 C of macaroni and cheese (from mix)
10 C of vanilla ice cream (rich)
10 chocolate milk shakes (10-ounce [oz] shake)
10 C of nonalcoholic eggnog
10 C of potato salad
12 Snickers® candy bars (2.16-oz size)
15 packets of M&M’s® (1.69-oz size)
16 C of long-grain rice
17 potatoes
18 cake doughnuts
18 strawberry Pop-Tarts®
18 C of enriched pasta
19 beef franks (2-oz franks)
19 slices of pepperoni pizza (1 slice=1/8 of 12″ pie)
21 oz of dry roasted almonds
22 servings of sour cream-and-onion potato chips (14 chips/serving)
22 C of whole milk
23 cans of cola or beer
25 C of chicken noodle soup
31 oz of cheddar cheese
34 C of corn flakes (without milk)
35 glasses (8 fluid ounces) of Kool-Aid®
37 tablespoons of peanut butter
39 containers of lite yogurt (6-oz containers)
43 apples (medium)
44 Oreo® cookies
45 fish sticks
50 C of carrots (boiled)
50 eggs
53 oz of pork chops (braised)
69 C of watermelon
71 oz of chicken breasts (skinless)
73 links of sausage
80 C of broccoli (boiled)
95 peaches (medium)
350 C of loose-leaf lettuce (shredded)
955 spears of asparagus
A person weighing 150 lb can burn 3500 calories in the following ways:

13 hours of walking at 3.5 miles per hour (mph)
12.2 hours of water aerobics
8 hours of vigorous weight training
7 hours of high-impact aerobics
6 hours of bicycling at a moderate pace
5 hours of jumping rope at a moderate pace
5 hours of running at 6 mph
5 hours of swimming freestyle at a fast pace

..interesting, wanna come back to this Thanks:flowerforyou: