I only began to understand why I was so stubbornly devoted to running when I couldn’t do it anymore. That’s where I was when I woke up in an emergency room on the morning of April 6, 2020, with a traumatic brain injury sustained during a dumb middle-of-the-night fall.

The last thing I remember I’d gone downstairs to the kitchen at 4 a.m. to get a snack. My husband heard a crash and found me unconscious, blood pooling from a large gash at the back of my head. When I woke up six hours later in an E.R., my left side was a bit weak, but more important, my muscles on that side couldn’t properly coordinate basic movements.

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