by TheKaiser on Thu Oct 09, 2014 6:37 am
It doesn't sound like these rides are over the top in intensity, if you are stopping to smell the roses, but I will just throw out there that if you are doing super hard intervals then you may want to try backing off of the intensity for a while to see what happens. Hard exercise activates our "fight or flight" response, and will pump a ton of glucocorticoids into your bloodstream. Maybe you have some sort of delayed clearance of these hormones, so that you are still in "fight" mode long after your system should have shifted into "rest and digest" mode. Even if you don't have abnormally delayed clearance, many people chronically over express these hormones due to excessively stressful lives, and then pile intense athletic training on top of that, which is not a recipe for good health.
For that matter, back off the volume too, if you are doing super long rides, to prevent excess fatigue, and see what happens.
I know people above have mentioned eating enough, and I will just add that this is particularly true during intense rides of over 60-90min, as glycogen depletion will rapidly increase cortisol levels in order to increase gluconeogenisis and the release of fatty acids into the bloodstream. In other words, when you run low of fuel, your body pumps out stress hormones that allow it to mobilize reserves, which can be good when needed, but that leaves you potentially suffering the side effects of those hormones in other ways.
If you are already loading way up on fast digesting carb products, could you be suffering crankyness from reactive hypoglycemia? In that case, switching to a lower GI whole food may be helpful.
These are things that you really need to tease out through self experimentation, perhaps starting with the extremes and then working toward the middle to clearly identify what your tolerances are (eg. does a 15minute easy ride eliminate these effects? Does extending your longest rides an additional 30min to really max your fatigue out make it way worse?).