[nuconvert]

I wonder if the weight comes back on almost as fast as it came off once you get back to a regular diet

[RockyMtnMan]

Yes, you have to change your metabolic rate to match your rate of consumption. If you consume more calories than you burn you will gain weight and conversely if you burn more than you consume you will lose weight.

The ONLY way to increase your metabolic rate is to exercise and increase your lean mass.

[RockyMtnMan]

Yes, you have to change your metabolic rate to match your rate of consumption. If you consume more calories than you burn you will gain weight and conversely if you burn more than you consume you will lose weight.

The ONLY way to increase your metabolic rate is to exercise and increase your lean mass.

[aruanan]

I wonder if the weight comes back on almost as fast as it came off once you get back to a regular diet

You can always add fat mass more quickly than you can burn it off through resting metabolic rate and physical activity. If this were not true, people would be in serious danger of starvation.

Here's how fast the weight will come back: energy intake/energy expenditure = X. If X is more than 1, you will gain fat mass. If X is less than 1, you will lose body mass. The larger the value for X above 1, the faster the weight, as stored fat, will be replaced. The smaller the value for X below 1, the more weight, both as stored fat and lean body mass, you will lose. If X = 1, then there will be no change in body weight. This is the fundamental truth of weight gain and weight loss. Anything promising anything different (short of surgical removal of fat) is fraud.