My approach is quite opposite of yours I guess, so it might be difficult to understand. I will attempt to share my thoughts.
I see this as a warning that something is amiss in your system. Since I presume you did not have an accident or a illness recently (you did not mention it), you need to take this time rather than waiting for one to happen again, but to do whatever is necessary not to let it happen again. Begin relaxation techniques if your recent pattern is to be stressed out. Analyze your nutritional choices to make sure your brain is receiving the nutrients that it needs for proper functioning. Obviously you are asking a lot of your body if you are a triathlete.
The diagnosis of E is only a label. You have to find the cause. Almost like a sliver in the foot... you have to go digging. For me it has meant turning one rock over at a time. I think I found the golden rock for my daughter, thanks to the map that Bernard supplied me with.
You have my best wishes towards finding the right answer.
It seems like you're really on top of being proactive in controlling what could be epilepsy. Keep up the great work! Try to come to a neurologist with as much information as possible. Even the smallest detail may be important.
I totally agree that stress is a huge factor with epilepsy. This is the worst part of it. The more you worry about that next blackout, the more likely it will occur. Then, that vicious cycle just starts all over again. Nasty!
I've learned that breakthrough seizures may take a while to stop. I have had a few in the past, stayed on the exact same medications, and had a few seizures until everything calmed down. Sometimes, I had a temporary increase in the meds until everything went back to a normal state. The brain is tricky!
If you are placed on medication, I personally recommend brand name only. The brand name medication has a consistent filler ('inert ingredient') along with the exact amount ('therapeutic level') of the actual 'active' drug. Your doctor will have to mark the prescription as brand name only as well if you choose to take medication.
They are finding out that people switching between brand name to generic, generic to another company's generic, or generic back to brand causes seizures. For me, it's worth the extra cost to buy brand name only.
Ironically, because of the epilepsy, I was always walking everywhere and now they're recommending that we walk at least 10,000 steps daily.
I'm hardly an athletic person like you, but I do walk my active bored border collie everyday. This past week had excessive heat outside. So, we're doing our exercises inside. Exercise is a great stress buster, as you probably already know. Just do it where there's not a lot of heat. I'm running an air conditioner right now.
Is it possible that you needed those electrolytes from those sports drinks (non-caffeinated, of course)?
It might be a good idea to monitor your sugar level, especially early in the morning before you eat anything. People with a low sugar level (below 100, I think) can pass out or go into a coma. Glucose monitors are available in drug stores. Check it every morning. Some monitors have a memory of your levels throughout an entire week (or longer).
If possible, try to write down stuff that you're eating and drinking. Like RobinN said, it could be a number of possibilities there. My weight loss group encourages us to do that one. I love chocolate and it's SO easy to eat one piece after another without a second thought.
Write down all current medications.
Knowledge is power!