well.. mao man ni ako gi sunod..
base sa BMR
BMR(MEN) = 66 + (13.7 x wt in kilos) + (5 x ht in cm) - (6.8 x age in years)
BMR(WOMEN) = 655 + (9.6 X wt in kg) + (1.8 X ht in cm) - (4.7 X age in years)
times activity factor
Activity factor
Sedentary = BMR X 1.2 (little or no exercise, desk job)
Lightly active = BMR X 1.375 (light exercise/sports 1-3 days/wk)
Mod. active = BMR X 1.55 (moderate exercise/sports 3-5 days/wk)
Very active = BMR X 1.725 (hard exercise/sports 6-7 days/wk)
Extr. Active = BMR X 1.9 (hard daily exercise/sports & physical job or
2 X day training, marathon, football camp,
contest, etc.)
so let say ako..
BMR = 66 + (13.7 x 105.8 kilos) + (5 x 180cm ) - (6.8 x 22)
BMR= 2265.86
activity factor let say 1.75
so 2265.86 x 1.75 = 3965.255 <-- mao ni ang total calories ako need in a day
so basi ani..
so...
we know that there is 3500 calories per pound of fat... just wanna play it safe(sample ra bitaw ni..) so i want to make a deficit of 20% ( the optimum is around 15-20% but sometimes some of us [like me hehehe.. ] are... umm... let's say XXXL, needs a larger deficit, so around 25-30% is ok) so we calculate is like...
3965.255 - (3965.255 x .2) = 3172.204 (total # of cal - the deficit of 20% = this should be the amount i should eat in a day to lose the amount a week shown in the last part of the caluculation)
3965.255 - 3172.204 = 793.051 ( total # of cal - the deficit total = the # of calories per day that i "missed")
793.051 x 6 = 4758.306 (the # of cal... x 6 [i workout six times a day] = the number of calories you lose during the week)
4758.306 / 3500 = 1.359516 lbs/week ( calories i lost / 3500( a lb of fat is about 3500 calories = the equivalent of pounds i lost in a week)
of course.. ASSUMING i'm eating right with the right excercise & no cheat2x..
REMEMBER!!!
Your lowest allowable calorie level should be:
A) 1000 below maintenance
or
B) 1200 for females/1800 for males
whichever is higher.