A limiting factor is anything that makes it more difficult for us to achieve results or reach health and fitness goals.  In my studies to become a nutrition coach, Precision Nutrition outlined the following as common limiting factors:
1) Genetic makeup
 - This means you may not have the upper limit physical abilities to win an elite world class event or be on a pro-sports team.  This does NOT mean, "I'm overweight simply because I was born to be," or "All of the women in my family are big, so I'm destined to be."
2) Exercise
 - This might be a limiting factor because you have little to no desire to exercise or don't make the time for physical activity.
3) Physiology
 - Some of us have imbalances in our bodies (i.e.- hormones!) or gastrointestinal dysfunction.  These are a few things that can make it more challenging to reach certain physical goals.
4) Mindset
 - Do you talk yourself out of things?  Are you depressed or have a negative attitude in life?  These are examples of how your mindset can be an obstacle.
5) Nutrition
 - What do you eat and drink on a daily basis and how much of it are you taking in? 
For most of what I just listed, we are basically blocking our own path to success.  Remove your limiting factors and find a way to push your own limits! 
If you need help, I'm here!  I just passed my exam and am now a Certified Level 1 Nutrition Coach!!!  You can go to my website to check out my options (nutrition offerings will come out mid-February) at www.fitpersonaltraining.net.  Check out Precision Nutrition to read their articles and blog as well: www.precisionnutrition.com.
