In the picture above where I am wearing a Red T-Shirt, I was ~ 175 lbs ( 79.5 kg) at 20% body fat percentage. What is my lean body mass?
Come on take out your calculator and do this with me.
Step 1: Calculate your Fat Mass
Fat Mass: 175 lbs x 20% = 35 lbs.
My Fat Mass was 35 lbs.
Fat Mass is simply the adipose tissue in my body.
Subcutaneous fat (fat underneath my skin), Visceral fat (fat surrounding my organs like heart/liver etc) and intramuscular fat (fat surrounding the muscles).
Subcutaneous fat + Visceral Fat + Intramuscular Fat = 35 lbs ( 15.9kg)
Step 2: Lean Body Mass = Total Weight — Fat Mass.
Lean Body Mass: 175 lbs – 35 lbs = 140 lbs.
My Lean Body Mass was 140 lbs.
So what does Lean Body Mass comprise of?
Everything except for your fat mass.
What does ‘Everything‘ comprise of’?
- Water. 70 percent of your body is water
- Bone mass. Your skeleton or bone weight
- Organ weight like heart, liver, stomach, kidneys etc
- Skin Weight
- Blood Weight
- Anything else that is left EXCEPT for Fat Mass
Here is your homework.
Shaily is 130 lbs at 29% Body Fat percentage.
Calculate her Fat Mass.
Calculate her Lean Body Mass.
Let me know your answers below.
If you also have any comments, doubts or queries let me know below!