“This week I am going to lose 2 lbs. In total, I am going to take in 8,400 calories (1200 a day) and burn off 15,400 (2200 a day)… that’s too much a day… Well we need to at least burn off 1000 a day if we don’t eat anything right? So I’ll just eat 500 cal a day and burn off 1500… I can do that right?”
I want to shake people that think like this. I really do. Then I want to take them to their mom, put them right in front of her and say “Here you go, fix it the right way this time. Tell it to read a book and facebook doesn’t count.”
Your body burns calories every second. It really does.
Calories= energy
Energy= organs working
Organs working= eyes blinking, lungs breathing, stomach devouring and breaking down and the rest of the digestive tract furthering the process, heart pumping, nails growing
So even if you were to lay down all day long you would still be burning energy (calories).
But you don’t lay down all day long. You at least have to get up to go to the bathroom right? Get some food or water? Some people even go to work a few days a week and have to face the dreaded sunlight. Because our bodies are complicated, they’re still elevated from moving even after we’re done. Our heart rate is slowing down, our muscles and organs are repairing from the movement, the attack to eat more energy is still on. So you have to look at how active you are in your lifestyle.
Then you put in if you do long stents of exercise or short stents because the longer you go the more calories you burn a minute. Can I explain this to you? No I cannot. But I can tell you based on my HR monitor and a few websites (this one for instance) this is how it work.
Where is your heart rate when you do all of this? Is it lower and in a fat burn mode or higher and in a cardio mode? Why do I ask? Because cardio mode will keep that metabolism at “above and beyond” or “teachers pet” levels for a longer period of time.
Did you eat before or after the workout? What kind of food was it? How slow will your body process it? Will your muscles easily eat it after the workout?
Muscles bring me to another topic. Are you flabby or not too shabby?
Who are your parents? How did your ancestors eat? Yes, even your blood type has a say in how many calories you burn each day, each hour, each moment.
So please do not tell me you have to burn more calories IN THE GYM than you eat each day.
And if you still disagree with me, I hope you enjoy your metabolism shut down while I enjoy this banana on the couch.
Moving on-
Your BMR a.k.a. your basal metabolic rate can help you get a little closer to following the annoying code of “calories in vs. calories out” (a buttload of crap if you’re not willing to eat good calories but that’s just my opinion). Your bmr is how many calories you burn if you were to lay in bed all day and not move a muscle.
It’s pretty easy to find this if you go to a website like This.
Aren’t you happy when I do all the googling for you?
But if you’re a super nerd- here’s the maths for it
Men: BMR = 66 + (13.7 X wt in kg) + (5 X ht in cm) – (6.8 X age in years)
Women: BMR = 655 + (9.6 X wt in kg) + (1.8 X ht in cm) – (4.7 X age in years)
For instance I put in that I am 5’10”, 240 lbs, and 29 years old.
It says based on those three factors that I burn 1861 calories a day doing nada.
But I can’t just rely on that to see how many calories I can eat because I don’t just lay down all day.
So we add on to that the harris benedict equation.
I’ll do the steps with you. My stats will be in parentheses.
Find your activity level on this list and then put your stats in with it. (I’m sure there’s a calculator site for this one but this is basic math people… do it!)
Harris Benedict Formula
To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:
-
- If you are sedentary (little or no exercise) : Calorie-Calculation = BMR x 1.2
- If you are lightly active (light exercise/sports 1-3 days/week) : Calorie-Calculation = BMR x 1.375
- If you are moderatetely active (moderate exercise/sports 3-5 days/week) : Calorie-Calculation = BMR x 1.55
- If you are very active (hard exercise/sports 6-7 days a week) : Calorie-Calculation = BMR x 1.725
- If you are extra active (very hard exercise/sports & physical job or 2x training) : Calorie-Calculation = BMR x 1.9
(1861×1.55=28844.55 for me. So I on average will burn 2884 calories a day if I stay with my regular schedule)
Does this include the actual workouts I do? I’ve found people arguing that. Some say you have to eat back the calories you see on the screen. Some say you don’t. This is like sparkpeople.com and myfitnesspal battling it out. But I can tell you this, if I work hard hard hard on my workout and I’m in there for more than an hour a day… I’m not going to put myself as moderately active even if I only do it 5 days a week. I would put myself as very active because that’s my fit level. But right now I’m in the gym an hour 4 days a week. Nuff said. And if I burn 100 calories extra a day… it’s an extra 100 calories. Tada. I just stick with this formula and forget what that screen says unless I want to overeat that day.
MOVING ON-
Now to see how much you need to eat a day…
To lose 1 lbs a week eat 500 calories under your answer from the Harris Benedict Equation.
To lose 2 lbs a week eat 1000 calories under your answer from the equation.
For females- do not eat under 1200 calories a day. If you do, I will mentally smack you.
For men- do not eat under 1500 calories a day. If you do, I will mentally smack you.
(eating too little will cause your metabolism to slow by up to 50%, same goes for not eating in over 12 hours for all you “I only eat once a day”)
Are all these formulas spot on? No, they aren’t. Like I said, your body is unique and complicated. But this is a step up from Cal in vs Cal out. Yes yes? Yes yes.