Well it’s that time of year when the race reports start rolling in! Actually not much to report except a half marathon where some running miles paid off. I was pleased because I was not super rested and felt pretty darn good! So what in the world does this have to do with magnesium? Several weeks before the race, I had to start supplementing with Mg for a number of reasons and it really opened my eyes as to how many roles this mineral plays in the function of our bodies and how much better I felt.
Long story short, I started to get very odd and persistent calf pain, even while not running, basically all the time. I was beginning to think I was going to be the only person in the world that was going to tear a calf while just sitting in a chair or rolling over in bed. It was “odd” pain though, not normal stuff you’d expect from training. Very hard to describe, like my calves were very hard, swollen and sore to the touch. Turns out this is a big sign of a MG deficiency, which as much as 70% of Americans have. I also felt as if I could not take a deep breath along with other weird things I never linked together. And here goes the standard disclaimer: I am not a nutritionist and you should not be looking for sound nutritional advice on a random blog. This is my personal experience only.
Magnesium, like iron, is one of those things that is very much depleted during running and is hard for the body to absorb through food sources, as is iron. Your body will absorb about 20 to 50% of the magnesium that you ingest. And it goes without saying that I am a ridiculously heavy sweater, I’ll pretty much pass out if I don’t get about 1000 mg/sodium/hour while training much less racing and we’re sweating out all electrolytes of course, not just sodium NA. You’ll absorb a small portion of magnesium compared to what you take in. And like iron, it depends on the form of Mg and taking it with vitamin C helps it absorb more. More was going out than going in. There were also several other odd “symptoms” that I never would have linked together, much less linked to Mg. This is one interesting little mineral.
So, what does Mg do for your body? It’s responsible for more than 300 biochemical reactions in the body. It helps maintain normal muscle and nerve function, keeps heart rhythm steady (I was at the doc before finding this out with bad heart palpitations, but did not link the calf pain to this either) and it is extremely necessary for proper ATP synthesis (ATP often being called the “molecular unit of currency” of intracellular energy transfer). ATP transports chemical energy within cells for metabolism. Only 1% of magnesium is found in the blood, but the body works extremely hard to keep blood levels of Mg constant. It also plays a role in blood pressure and blood sugar levels. It cannot be made by our body, so it has to be plentiful in the diet in order to get enough.
Where do you get Mg from?
First, another thing that Mg and iron have in common is that foods high in oxalates inhibit absorption. So, if you eat veggies high in oxalates, it inhibits both iron and mg from being absorbed well. Ironic, since we all hear to eat spinach for iron,( it’s also very high in Mg) . However, spinach, swiss chard, kale and beet greens are high in oxalates, actually inhibiting absorption. So, it is better cooked than raw in this case. That being said, green leafy vegetables are a great source of Mg. Highest in Mg are: pumpkin seeds (I don’t know about you, but I rarely, if ever, sit around eating pumpkin seeds except around Halloween), spinach, swiss chard, soybeans, sesame seeds, Halibut, black beans, quinoa, sunflower seeds and cashews. Yes, it’s all a little confusing since some of these foods will also be on lists of what inhibits absorption.
Another benefit of taking Mg is that I feel like I can BREATH, wow!! Funny how things can slowly sneak up on you until it becomes normal. So after doing some research and taking a liquid Mg supplement which is not agree with my stomach, I am taking 2 Slo-Mag tablets, 2xday with vitamin C. Love it! Also, the First Endurance Multi V has 250 mg of a very highly absorbable Mg chelate. This is the only multi vitamin where I can feel a huge difference when taking it regularly. I have tried some really expensive vitamins like the Bionic Supermodel, which is outrageously expensive, and just could not justify it. The FE Multi Vs have some solid studies behind them. It’s entirely anecdotal, but a coworker of mine was still having heel pain after having a stress fracture there ages ago, she started taking the Slo-Mag and the pain totally went away, which was cool to hear (you can’t absorb calcium well if you don’t have enough Mg). So, there ends my little speech on Mg. Hope it helps a few people out there!
In other news, I have a local race coming up and then will be back in KS since I just love the race but love the company at the race more. It will be a nice little reunion with my friend Julia and also Ben! Not to mention our very gracious homestay peeps that let us take over their upstairs with us turning it into an area where it looks like a transition area exploded. What did we do to the nice clean, very white sheets awaiting us in years past? Got body marked the day before and imprinted our numbers all over the bed while we were sleeping.
Kansas 70.3 involves a crazy amount of walking to pick up your packet and then set up. Seriously. Like so much you feel like you need to taper for the T1 and T2 set up. Julia and I cannot figure out a way to make this easier. I am pretty sure we took a nap last year after setting up. Otherwise, we have a few things down, like how to avoid the long lines into the park race morning and how to find our car afterwards. Trust me, things look totally different at 4am when you’re parking your car in a pitch black field. We have an alarm to get up, another goes off for when we should be eating, another for packing the car and one even goes off for when we should be pulling out. BUT THE WALKING!! We have not cracked the code yet on this part, but we’re going to try
We are not VIPs so we can’t roll on up to the main area, we’re stuck parking in a hot field on a 100 degree day humping all of our equipment up and down hills and fields of tall grass. This year we’re going to try to figure it out……









