Cortisol, CrossFit, Kryptonite
You just got out of work, its been a hectic, stressful day. You get to your box get warmed up, set up your stuff and its “3,2, 1, GO!!!” You take off like a bat out of hell because you “Compete Every Day”. One round in, 2 rounds, 3 rounds, and on until you finish. You finish and fall flat on your back. You give it all that’s left in the tank. It was a great work out…high fives all around and you head home. Now you are headed home in a rush, gotta head home to see the family and hopefully there’s food ready otherwise you are headed towards the nearest market…So you finally get home, you're exhausted and hungry. If you have kids, you help them with your homework, make sure they get cleaned up, all while prepping dinner. Finally you eat, and try to get to bed hopefully before midnight.
Your day may not be entirely like this, but its probably similar! We all have things that occur daily that may cause some stress. Your dog ran out the door as you left for work…you snoozed too much, you forgot to pack your lunch or the coffee line took longer than expected. Maybe its finals week, or maybe you just like the night life and get 5 hours of sleep every night. Reminder being out late and getting “turn’t up,” is still stress on your body.
SO WHAT’S the point? The point is that your body doesn't differentiate the kind of stress you put yourself through. So whether it be physical or mental, relationship or career, school or lack of sleep, your body’s response is the same. This stress causes a spike in your cortisol levels. And let me clarify, ANY stressful incident or constant stress provokes a spike in your cortisol levels.
Why is this important? Well, before I begin to vilify cortisol lets understand that the actions of cortisol can be life saving. It helps us when our life is being threatened. For example, when we are injured or fighting. HOWEVER, health can diminish greatly if these conditions are not present and levels stay high over time. It can increase blood pressure, slow down digestion, suppress growth hormone, and lower sex hormone production.
As a matter of fact, cortisol can affect almost every system in the body.
reduce the ability to fight off colds
low energy during the day
loss of muscle due to suppressed growth hormone production
more prone to plaguing of the arteries
Another sign of chronic stress and elevated cortisol can be reduced sex drive. Lowered production of sex hormones, estrogen and progesterone in women, and testosterone in men, with an increased cortisol level…not very desirable is it?
As I stated earlier, your body doesn't differentiate the kind of stress you put yourself through. So coritsol spikes occur whether it be intense exercise or a stressful job, but it will also drop after the incident. However, it can be very hazardous for your health if you have repeated incidents of stress. Here is what happens. If you have too many incidents that cause your cortisol to spike and drop, it stops spiking and in time cortisol levels just stay high. If these incidents persist, your adrenal glands become way too stressed and cortisol production stops completely. This is not good at all. Remember cortisol’s actions can be life saving. It is essential to proper body function, but it is all about balance when it comes to cortisol in your body. So, after many habitual incidents production stops or slows down significantly. This leaves levels low, chronically low. Many refer to this as adrenal failure.
Studies have shown very clearly that when people exercise it raises *adiponectin (a protein hormone that modulates a number of metabolic processes, including glucose regulation and fatty acid oxidation) and testosterone levels. Both are great for weight management and fitness. Very intense exercise raises cortisol levels. Normally this is ok if you give yourself time to allow those levels to drop again. This is how we get FIT. Now if you have very intense training session or sessions i.e. your classic CF Metcon, incorporated into your daily routine and other parts of your life are also loaded with stress (lack of sleep, inadequate nutrition, stressful job, relationship problems, hectic schedule, etc), then you are on track to a dead halt and a rude awakening in your fitness development and the results you are expecting in your body composition changes. You will be spinning your wheels hard and the wheels will fall off sooner or later. It all depends on how resilient you are and how much stress you're putting yourself through. For some this could take years.
This is why intelligent program design along with good sleep, adequate fueling, and proper stress management is so important if you wish to create long lasting change in your health and fitness. I am a huge advocate for good solid programming that forces adaptation while also allowing cortisol to return to normal, and muscles repair and build. This might be hard to admit for the adrenaline junkie that just wants a rush (very unhealthy by the way) or the long time CrossFit junkie that thinks the daily metcon after his/her strength work and gymnastics work (typical WOD routine) is supreme. Both are very wrong. At The Lab, progress, long term progress, this means continued progress after years, is very important. This is also, why we provide lifestyle coaching to help you balance everything and ensure long lasting health.
Its hard to get out of that way of thinking given what has been happening in the fitness industry over the last decade. Everywhere you look you see some sort of intense training promising to make you into Superman. This is why many people that embark into The Boot Camp and CrossFit method drop weight the first few months, then get stuck. This explains the lack of consistent results. Not sleeping well, digestive symptoms, low mood, not recovering as quickly from workouts, not getting the same response to workouts, etc. I’m sure many have been taught to “just push through it”. This was probably instilled back in high school. Yeah of course your life is arranged the EXACT same way as high school right? Fast forward and NOW of course, you're a CrossFitter, get comfortable with feeling uncomfortable, Don't be a little baby, etc. Hey, I’ve been there, but I have told you what happens with constant elevated cortisol so do I need to continue to emphasize how incredibly unhealthy this is?
Let me just identify exactly what I mean by “hard training” or “intense training”. This is the kind of training that leaves you flat on your back after finishing, CrossFit classifies these as MetCons.
So what am I saying? Am I saying don't ever train at high intensity? NO! I am saying it depends. I am saying think about your goals, your current level of fitness. I am saying based on your goals, it may just be better to do some resistance training and aerobic training separately. I am saying doing congruent training/mixed modality training/metcons should be integrated intelligently and depend on where you are at in your fitness. I suggest you upgrade your training. Find a competent coach and a competent place with smart program design. If you are in a good place, listen to your coach just as you would listen to your doctor or your accountant in matters of their expertise. If you are seeing a “For Time” every day and finishing flat on your back day in and day out then begin to question the program. Don't let your “Daily WOD” will be your Kryptonite.
Final point for those trying to lose weight
First, change your thinking get out of your mind, we went to school for this and we are the experts. You don't have to redline every time.
If you are out of shape, being sedentary for a long time, or untrained, we recommend resistance training and aerobic training separate. Incorporate concurrent training/mixed modal training/CrossFit intelligently and sparingly. The resistance training alone will increase testosterone without spiking cortisol. The aerobic training will help with fat burning. Intelligently adding concurrent training/mixed modal training/CrossFit in a monthly training cycle will result in optimum results and long lasting health which ultimately, the goal is to live a long, fulfilling, healthy life.
If you find yourself recovering slowly, always fatigued, getting injured easily, getting sick frequently, or any other of the symptoms I discussed earlier feel free to contact us on how you can upgrade your training. We want to get you back to feeling the best your ever felt in the current life you are in.
Ready to talk about your fitness goals? email us at [email protected] to request a free fitness consultation. Or call 915.307.2710 to schedule your time today!
Health and Fitness Educator, CSCS Coach, CrossFit Level 2