Activity level.

imsosadd

I have a problem with determining my activity level. I work at subway, (On my feet) Almost everyday, I bike too and from work (About 3 miles). I clean a hotel every wednesday, walking up 10 flights of stairs, I walk to the library almost everyday and everymorning i sprint for 5 minutes. Help me so I can learn what my calories should be

Amadbro

You really find your TDEE through trial and error. Pick a number using bf formulas and go from there. If you gain after a week, reduce by 100-200, if you lose then bump 100-200. Do this until you find that magic number based on your activity level. I ended up buying a bodybugg, wore that for a week and averaged my numbers together to find it and it worked perfectly.

Estimating Requirements
The simplest method is to base your intake on a standard 'calories per unit of weight (usually kilograms)'. Typically:
- 26 to 30 kcals/kg/day for normal, healthy individuals with sedentary lifestyles doing little physical activity [12.0-14 kcal/pound]
- 31 to 37 kcal/kg/day for those involved in light to moderate activity 3-5 x a week with moderately active lifestyles [14-16 kcal/ pound]
- 38 to 40 kcals/kg/day for those involved in vigorous activity and highly active jobs [16-18 kcal/ pound].
For those involved in HEAVY training (eg: athletes) - the demand is greater:
- 41 to 50 kcals/kg/day for those involved in moderate to heavy training (for example: 15-20 hrs/ week training) [18.5-22 kcal/ pound]
- 50 or above kcals/kg/day for those involved in heavy to extreme training [> 22 kcal/ pound]

There are then a number of other formula which calculate BMR. This means it calculates what you need should you be in a coma.
1/ Harris-Benedict formula: Very inaccurate. It was derived from studies on LEAN, YOUNG, ACTIVE males MANY YEARS AGO (1919). Notorious for OVERESTIMATING requirements, especially in the overweight. IF YOU CAN AVOID IT, DON'T USE IT!
MEN: BMR = 66 + [13.7 x weight (kg)] + [5 x height (cm)] - [6.76 x age (years)]
WOMEN: BMR = 655 + [9.6 x weight (kg)] + [1.8 x height (cm)] - [4.7 x age (years)]

2/Mifflin-St Jeor: Developed in the 1990s and more realistic in todays settings. It still doesn't take into consideration the differences as a consequence of high BF%. Thus, once again, it OVERESTIMATES NEEDS, ESPECIALLY IN THE OVERWEIGHT.
MEN: BMR = [9.99 x weight (kg)] + [6.25 x height (cm)] - [4.92 x age (years)] + 5
WOMEN: BMR = [9.99 x weight (kg)] + [6.25 x height (cm)] - [4.92 x age (years)] -161

3/Katch-McArdle:Considered the most accurate formula for those who are relatively lean. Use ONLY if you have a good estimate of your bodyfat %.
BMR = 370 + (21.6 x LBM)Where LBM = [total weight (kg) x (100 - bodyfat %)]/100

As these are only BMR calculations To convert BMR to a TOTAL requirement you need to multiply the result of your BMR by an 'activity variable' to give TEE.
The Activity Factor is the TOTAL cost of living, NOT JUST YOUR TRAINING. Think about it - if you train 1 hr a day - WHAT ARE YOU DOING THE OTHER 23 HRS?! So MORE important than training -- it includes work, life activities, training/sport & the TEF of ~15% (an average mixed diet).
Average activity variables are:
1.2 = Sedentary (Desk job, and Little Formal Exercise)
1.3-1.4 = Lightly Active (Light daily activity AND light exercise 1-3 days a week)
1.5-1.6 = Moderately Active (Moderately daily Activity & Moderate exercise 3-5 days a week)
1.7-1.8 = Very Active (Physically demanding lifestyle & Hard exercise 6-7 days a week)
1.9-2.2 = Extremely Active (Athlete in ENDURANCE training or VERY HARD physical job)

How Accurate are they?: They give rough ball-park figures and are still 'guesstimations'. So the aim is to use these as 'rough figures', monitor your weight/ measurements for 2-4 weeks, & IF your weight is stable/ measurements are stable, you have likely found maintenance.

rach503

Easy! Buy a FitBit Zip. You can get it on Amazon right now for $50. FitBit & MFP work together so well & it will give you a real-time view on how active you are. Mine adjusts the calories I can eat based on how active I am. $50 may seem like a lot, however it has more than paid off for me with how much more insight and motivation it has given me. Just my 2 cents...

determined_erin

I love using BodyMedia! It's an armband device that tracks all of your steps, calories burned, etc. I highly recommend it to track everything. I think this will really help you.

corgicake

That doesn't sound far from what I did last summer. Moderately active tended to result in losses beyond what the calculator thought I had any business losing and very active was dead on.