I'm in trouble.
Went for a one hour run on the treadmill yesterday. And got my ass kicked big time.
Stepped off the treadmill and the room was spinning. Got back home and almost passed out. Not good.
Although I did manage to cover 10k, I was left exhausted and in pain the whole day. I guess this is what happens when you do absolutely nothing since Ironman.
I'm now re-adjusting my KL Half Marathon target from 2h10m to please-let-me-just-finish-within-cutoff!