Figuring caloric and macronutrient intake to build muscle
July 4, 2008Now that I have a routine in place, I need to put together my nutrition plan so that I stay on track. Knowing the caloric and macronutrient needs for my BMR is critical to achieve my muscle building goals while maintaining, and losing body fat.
I use this formula to calculate how to make each of my 6-8 meals per day. I have a small cooler that I pack with my daily meals so that…
1. I don’t get too hungry
2. Make excuses to eat from the vending machine or from the junk left over from business meetings in the break room …pastries, pizza, chips
3. Most importantly I keep on track with my goals, feed my muscles, and maintain/increase energy throughout the day.
Ok, here goes….get on the scale only once a week! Don’t obsess about weight on the scale, it’ll drive you crazy and may make you want to curtail your meals. Do the formula, figure out what your needs are and just make sure you are not gaining body fat and all will be alright!!
I weighed in at 112 lbs yesterday so that is my body weight. I use the OMROM body fat monitor and found that I am at 20% body fat. This tells me that my current body composition, body fat ratio (body weight x body fat percentage) is (112 - (112 x .20) = 89.6)
the basic formula is: body weight - body fat percentage = pounds of fat
body weight - pounds of fat = pounds of muscle
add a zero to the end of pounds of muscle to get your BMR
But this is not enough to determine your caloric needs. You need to find your additional activity multiplier to add to the Basal Metabolic Rate. The BMR is strictly your basic calories needed for your body to function and trying to calculate only for this will set you up to STORE FAT! I work at a desk all day, but I workout at least 5 times a week so a basic formula to add for additional calories is:
EXTREMELY PHYSICAL = .9 (Office job and workout hard 6x week)
VERY PHYSICAL = .6 (Office job and workout hard 5x week)
MODERATELY PHYSICAl = .4 (Office job and workout 3x week)
Use this as a multiplier to the BMR you’ve just established. Mine looks like this:
112 (body weight) * .20 (body fat percentage) = 22.4 (pounds of fat)
112 (body weight) - 22.4 (pounds of fat) = 89.6 (lean muscle mass)
900 (lean muscle mass (rounded up) + zero added to end) = BMR
900 (BMR) * .6 (activity multiplier) = 540 (additional calories)
900 (BMR) + 540 (additional activity calories) = 1440
Now I know what my caloric, macronutrient needs are PER DAY. All I need to do now is figure calories per meal so that I can pack my cooler to have my food available in the proper balance when I need it.
My next post will be about how to determine each meal so that it is in PERFECT balance with all of my caloric and macronutrient needs. I have to take into consideration nutrition timing because timing is everything. Pre and Post workout meals are critical.
Like right now I am about to go to the gym but about an hour ago I had 5 egg whites and some Maltodextrin (easily digestible carbohydrates). Along with this meal I had some Creatine for energy and muscle growth and development.
I found an excellent article on bodybuilding.com about this very topic. I refer to it like a bible…taking into consideration how I know my own body responds to certain supplements and nutrition, this is an excellent resource.
http://www.bodybuilding.com/fun/topicoftheweek37.htm
HAPPY FOURTH!






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