hurts soo goooood!

Well, I'm feeling it. I really pushed myself this weekend trail running, swimming and engaging in various park activities. Who knew Bocce could be such a workout. So it seems like an appropriate time to address a very universe experience.... Muscle Ache

Question: Why do muscles ache?

This is an interesting one that I’ve only recently discovered a good answer for. Muscles ache for a very simply reason… they are being burned. When we move, contract a muscle, a complicated reaction happens that can be simplified by saying glycogen is converted into Lactic Acid.

Everytime we bend our arm, stand up, walk, eat, twist, dance, snowboard or play wii tennis we convert glycogen into lactic acid.

It is this lactic acid that actually causes the pain because being an acid, it literally burns the pain receptors in our muscles causing an acheiness. This lactic acid will stay in the interstitial areas of our muscles, between fibers and cells, waiting for the lymphatic system to come through like a janitor and clear things through.

During normal activity, this isn't a problem because there is plenty of time for the lactic acid to get cleared through the lymphatic system. In exercise terms, this is considered aerobic, meaning with oxygen.

It is during high intensity activity that this becomes a problem. Trying to climb 50 flights of stairs will trigger a burning sensation in your quads because the intensity has now pushed beyond the limits of aerobic contraction and has become anaerobic, meaning without oxygen. At this point, you are said to have passed your aneorobic threshold. What that means is you are not able to clear out lactic acid as quickly as you create it.

Performance athletes are well aware of these thing because succeeding in sports depends on being very sensitive to your anaerobic threshold. A marathon runner knows that if they are going to last 26 miles they need to make sure that they stay below their anaerobic threshold. on the other hand, a sprinter will be able to time their exertion so that every single ounce of energy is put into running those 100 yards and they will go far beyond the anaerobic threshold and be quite spent after just a short time of exertion.

Some of you might think, what does this have to do with me? I'm not a performance athlete, in fact, I haven’t moved from my desk all day? The truth is all of us, we are continually involved in movement. If you're going to yoga regularly or hiking on the weekends, this movement is active. If during the week though, we stop actively moving it does not mean that are muscles have stopped working. If you are driving for a commute, or sitting upright at your desk, if your posture is slouched or arched or tilted, if your shoulders are way up by your ears or your belly is tucked in to hide a beer belly, there is a muscular event happening. That muscular event is happening continually at an unconscious level. When you look at your posture and think, well that’s how I’ve looked for quite awhile, that means your muscles have been engaging in this way for quite awhile. And every time a muscle contracts or every second that a muscle stays contracted, it burns glycogen and creates lactic acid that needs to be cleared by your lymphatic system.

Not only does this cause a continual production of lactic acid but it also inhibits the action of your lymphatic system. By tightening a muscle you effectively create a tourniquet around the bone, joint, and arteries. The lactic acid gets stuck and cannot drain efficiently. One of the most common recommendations you’ll hear from me and other massage therapists after a treatment is to drink plenty of water because toxins have been released. Toxins can only be released if they were at one time stuck, trapped inside the grip of a tight muscle.

When this tourniquet tightens it also blocks the entrance of oxygen so that if continued, even a mild, innocuous contraction can start to pass the anaerobic threshold, creating lactic acid faster than you can clear it through. When this happens, fatigue sets in very quickly and your shoulders, back, neck, stomach become very sore and tired.

When someone's back "goes out" or they tweak their neck, what is typically happening is that the muscle goes into a spasm(100% contraction) and begins to anaerobically create lactic acid at an extreme rate, the equivalent of holding a 90lb dumbell in your bent arm for 30 seconds. The muscle will scream in pain from this rush of acid to the pain receptors and will continue to burn as long as the spasm is present. The spasm must be dealt with before the pain can start to diminish and even afterwards it can take some time for all of the lactic acid to dissolve.


Interestingly, the lymphatic system also depends of muscle contraction to push waste through the system and clear it out through digestion/elimination. So the key is not stuck movement but slow and steady contraction and release to literally pump the muscles, squeezing blood and oxygen in, lactic acid out. Simply put, a strong continual contraction will become anaerobic, depleting oxygen access and flooding the muscle with lactic acid. A continual process of movement, corresponding with balanced contraction and release gives the muscles time to rest and move through lactic acid to prepare for the next contraction.

Once again, Hanna Somatics provides the answers because not only are these techniques ideal for getting a person out of acute spasm but they are also ideal for gently and efficiently moving through the lactic acid :-)

Stay tuned because I will follow up on this with how anaerobic/aerobic contraction relates to sympathetic/parasympathetic states and how you can modify these states for better efficiency and performance on the marathon course or at your desk.