About a month ago I posted that I had discovered that I was suffering from iron-deficiency anemia. I have been running for about a year, consistently, 3-5x a week, and I didn't feel like I had much endurance for how much I trained so I wondered if there was a relationship.
Well, I am ABSOLUTELY STUNNED how much of a difference it has made. After about a month of iron supplements, both my speed and endurance and just going through the roof. Now, I'm starting to feel like the way I think I should have felt all along. Before, I just couldn't increase my speed without quickly hitting my cardiovascular max.
I kept thinking that something was wrong with me, because I could tell I wasn't building endurance as fast as I should, but I stupidly kept thinking that it was my age (late 40s) and the fact that I had been out of shape for so long.
But no, it was an actual health problem. Now that I'm fully oxygenated, I feel AMAZING.