Some Good TDEE Facts
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katiebythebay
Posts: 611 Member
What is BMR
Your basal metabolic rate, or BMR, is the minimum calorific requirement needed to sustain life in a resting individual. It can be looked at as being the amount of energy (measured in calories) expended by the body to remain in bed asleep all day!
What is TDEE
TDEE is the common abbreviation for Total Daily Energy Expenditure which is a metric to calculate the amount of calories your body needs to function in a day. This is quite similar to BMR; in fact, you need your BMR to calculate your TDEE; but your TDEE accounts for your average daily activity as well to give a figure truer to your specific situation. Basically, the TDEE calculation relies on categorizing your daily activity into one of the metrics' predetermined groupings:
Sedentary - desk job and little to no exercise
Lightly Active - light exercise/sports 1-3 days/wk
Moderately Active - moderate exercise/sports 3-5 days/wk
Very Active - hard exercise/sports 6-7 days/wk
Extremely Active - hard daily exercise/sports & physical job or training
Once you have determined where you fit in on the TDEE activity rate scale, this activity rate is used to weight your BMR giving you a more accurate assessment of how many calories you really need throughout the course of the day. Since BMR only accounts for your bodies basic functioning needs and not your daily activity, TDEE provides standard multipliers for accurately determining a TDEE. Those multipliers are as follows:
Sedentary - 1.2
Lightly Active - 1.375
Moderately Active - 1.55
Very Active - 1.725
Extremely Active - 1.9
Calculate Your Personal TDEE - Your Total Daily Energy Expenditure consists of three components:
The energy (calories) needed to maintain the body's basic functions like breathing, heartbeat, nervous system, circulatory system etc. (aka Resting metabolic rate (RMR) or Basal Metabolic Rate (BMR))
The energy your body needs to perform your daily physical activities (e.i., walking, typing, exercising in the gym etc.)
The energy your body needs to digest your meals and convert it to immediate fuel or fat (fuel for future use)
To calculate your TDEE we must calculate each of these three components and then add them together. We will calculate your total daily energy expenditure using the popular Harris-Benedict Formula...
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I came across this great post and wanted to share it with you guys. It's written by another MFP member, ANewLucia.
She's got an amazing and inspirational story. It's worth a look.
~katie
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