Did a 1.5 mile warmup then hill repeats. The hill was just short of a quarter mile up. I dropped after 4 because it felt like I couldn't breathe towards the top of the hill, I was breathing so heavy and fast and felt lightheaded. It's like I wasn't getting enough air. I wonder if it's iron deficiency related, probably. But I called it after that and did a mile cool down.
I can't wait for my iron to get back to normal.
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