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I’m of the age when I should be lifting weights — to help manage my increasingly decreasing metabolism and ward off bone density loss. And actually, I like strength training. But not as much as Greg Everett, founder of Catalyst Athletics and Olympic-style weightlifting coach. The author of  Olympic Weightlifting for SportsGreg is considered an expert on this sport, which requires quite a bit of calculations. Take a look.

Can you explain what you do for a living? 

As a coach for my competitive weightlifting team, most of my time is spent creating training programs for my weightlifters and coaching them during their daily training. I also write and edit books, as well as program our website.

When do you use basic math in your job?  

I use math every day. Most commonly, I use it to calculate training weights based on percentages of a lifter’s maximum lift, or to calculate a percentage based on the weight used. I also have to convert pounds to kilograms often; the sport of weightlifting uses kilograms officially, but sometimes individuals only know weights in pounds. During program design, I also use math to calculate other figures like volume (in this case, the number of repetitions performed in a given time period) to allow me to track and plan a lifter’s training. And of course, I have to be able to add the weights on the barbell quickly to know what a lifter is lifting. In weightlifting, weight plates are color coded to make this easier.

Do you use any technology to help with this math?

I do use a calculator frequently during program design for calculating percentages because I need it to be accurate. Calculations of volume are done with functions in the Excel spreadsheets I use to write programs. I normally do pound/kilo conversions in my head as much as possible just for the sake of practice.

How do you think math helps you do your job better?

Understanding some fundamental math concepts allows me to design better training programs and develop my weightlifters more successfully. Without math, there would be too much guesswork, and training athletes to high levels of performance requires accuracy.

How comfortable with math do you feel?  

I didn’t particularly enjoy math as a student, although I never struggled with it. I’m comfortable with the math I use frequently in my work and am fairly comfortable with basic algebra, geometry and the like. I feel like I have the math tools to be able to solve problems in life well, but certainly any more complex math I learned as a student has been forgotten simply because I don’t use it often enough.

What kind of math did you take in high school?  

Just the standard algebra and geometry; I didn’t take any advanced math courses in high school and was an English major in college. I felt that I was good at math to the degree that I was interested. That is, I never struggled with the concepts or the execution, but I also didn’t push myself beyond what I needed to learn. In retrospect, I wish I had put more time and effort into math and the sciences in school to build a better foundation.

Did you have to learn new skills in order to do the math you use in your job? 

I didn’t need to learn anything new for my job; what I learned in school was adequate. As I mentioned previously, I wish now that I had more exposure to more advanced math and science as a young student. At that time, I wasn’t interested enough to pursue it beyond basic requirements, but at that age you can’t predict well what you’ll end up doing in life. My advice to students would be to put as much time and effort into your schooling as possible because that time will be your greatest opportunity to learn. You can certainly regret not knowing enough, but you’ll never regret knowing more than you need.

Even jocks use math! Do you use math in your exercise program? Share your experiences in the comments sections — along with any questions you have for Greg. I’ll ask him to swing by and respond!

I suspect I’m not alone in one of my New Years resolutions: to eat better, exercise more and lose weight.  (Ack!  Did I just write that out loud?) Like other women in their mid-forties, I have found my metabolism screeching to a halt and my weight creeping up and up.  So last night, I launched my most recent — and hopefully last — attempt at getting into better habits.

But I’m not fooling myself.  This is a long process with a lot of little steps, some forwards and a few backwards.  My issue is staying motivated.  I do well for a while, and then I slip up — and eventually give up.  So, I’ve got a good plan that should allow me to make incremental changes and leave lots of room for mistakes.  And to accomplish this, I’ve got both measurable and soft goals.

Sure, I want to eat better (I can count each serving of veggies I eat or glass of water I drink.)  And I want to exercise more.  (I can count my hours at the gym or steps I take from my car to the grocery store.)  But for me, those are big changes that will include a lot of frustrating missteps.  In order to stay focused, the real measurement will be my weight.

My goal is to lose 25 pounds. And I’ll track this by weighing myself once a week.

So how long will it take me to lose the weight? This is where the math comes in.  Here’s what I know:

  1. I want to lose a total of 25 pounds.
  2. I will probably lose between 0.5 and 2 pounds each week.

Does this mean I’ll be sitting on a beach in a string bikini in August?  (That’s a joke.  I’ve never worn a bikini in my life.)  Let’s look at the math.

A half pound and two pounds is a pretty wide spread, so based on past experience and my inclination to be more conservative, I’m going to estimate that can lose about a pound each week.  So I can reasonably expect to lose all of the weight in 25 weeks.

Whatever you expect to lose in a week, the math is simple:

total weight lost goal ÷ loss per week = number of weeks

25 pounds ÷ 1 pounds per week = 25 weeks

So if you think you can lose 2 pounds per week, it’ll take you 12.5 weeks to lose 25 pounds:

25 pounds ÷ 2 pounds per week = 12.5 weeks

But there’s one more step I need to take.  I don’t think in terms of weeks.  My brain focuses on months. How many months will it take me to lose the weight?

Again, I’m going to estimate.  While there are approximately four weeks in each month, that’s not an exact figure (except in February during a non-leap year).  But since I’m not measuring out medication or figuring out how much to send into the mortgage company or solving problems for my eighth grade math teacher, I don’t have to be exact.  So I’m going to go with four weeks in a month.

I already figured out that I can probably reach my goal in 25 weeks.  To find out how many months that is, I can just divide by 4 (the number of full weeks in a month):

25 weeks ÷ 4 weeks per month = 6.25 months

Ta da!  I can reasonably expect to lose this weight in six months.  That means if all goes well, I should be at my goal by June.

Like me, are you hoping to lose weight in 2012?  Do the math to see when you’re likely to reach your goal.  And if you want to share, feel free in the comments section.  (It’s scary, but you can do it!)Save