Is this really true? I hope so.?

The body CAN NOT change resting metabolic rate per unit of fat-free body mass. Studies have shown this.


Your resting metabolic rate will decrease as you lose muscle. Losing fat alone will not lower your RMR (and note that you will need to follow a very sensible program to lose fat without losing muscle). You have probably heard that people who go on crash diets end up lowering their metabolic rate, which means when they go off the diet, they put on fat more easily than before they started. This is because they have lost muscle, they have lowered their metabolic rate.


However, the amount of energy burnt per unit of fat-free weight does not change; poor dieters end up with fewer units of fat-free weight, and that's where their vicious cycle comes from.Is this really true? I hope so.?
If I understand your formulation correctly, then yes, this is correct.





Also remember that when you gain lean muscle mass, your metabolic rate will increase.Is this really true? I hope so.?
yes it is true





also fat burns an extra 50 calories per lb per day
Yeah it's true, cause i read in the internet.