Fat-free mass
The combined mass of the body of everything that is not fat (e.g. muscle, bone, skin and organs) .
Frequency
How often you work out, such as the number of days lifted per week.
Fat-free mass
The mass (weight) of the body (muscle, bone, skin and organs) that is not fat.
G
Glycogen
The form in which carbohydrates are stored in the body, mainly in the muscles and the liver.
Fat-Free Mass (FFM), also called Lean Body Mass (LBM), is the total amount of nonfat (lean) parts of the body. It consists of approximately 73% water, 20% protein, 6% minerals, and 1% ash.
The fat-free mass or part of the body including all its components except fat storage.
LIPIDS
A family of compounds that includes triglycerides (fats and oils), phospholipids and sterols.
supplements (20 to 25 g/d for 5 to 7-d and 2 to 25 g/d thereafter) on body composition alterations during training have reported significantly greater gains in total body mass regimens 10,29,37,57,61,63,66,77,84,95,104,115 and fat-free mass.
Fundamentally, the muscular body weight equation is based on "improvements" to the Body Mass Index (BMI) and Fat-Free Mass Index (FFMI).
Fat-Free Mass and IR in Type 2 DM and Obesity
Abdominal Adiposity: Visceral and Subcutaneous Adipose Tissue in Type 2 DM
Lower-Extremity Adipose Tissue
Skeletal Muscle Fat Content
Hepatic Steatosis and IR in Obesity and Type 2 DM ...
Your body adiposity index is a measure of the percentage of your total body mass that is composed of fat (as opposed to fat-free mass which includes everything else other than fat that makes up the body).
Underwater Weighing - Also know as hydrostatic weighting, it is a method of determining body composition based on the assertion that the density of fat mass and fat-free mass are constant, lean tissue such as bone and muscle are more dense than water, ...
In other words, Ferriss was able to gain 28 pounds of “fat-free mass' in just 12 hours. This was done by manipulating fluid and glycogen levels in his body with the use of water, glycerol, carbohydrate and creatine.
Increase fat-free mass, which results in increased metabolism
Modest improvement in cardiorespiratory fitness
Improved glucose tolerance
Reductions in blood pressure
Improved cholesterol levels
...
Both groups achieved significant strength gains; however, the supervised group also made significant improvements in body mass, fat mass and fat-free mass.
 See also: Mass, Exercise, Energy, Fat, Fitness
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