Lightning almost struck twice to end Mo Farah's 5,00m Olympic dream.
The former Feltham Community College and Isleworth & Syon student was caught in the back straight in the closing stages, but amazingly recovered his feet to make Saturday night's final - but only in third place.
On Saturday, he got up from a tumble to win the 10,000m title.
The morning run saw the thermometer touch 30c, and after the emotion and the exertions from the first race, Farah admitted Rio has taken its toll.
He said: “I’ve got such a long stride that I always managed to get tangled up with someone, but I just about managed to stay on my feet. It’s quite nerve-wracking again.
“I was just getting back into the zone again. Sometimes you just take yourself away from it a little bit and that’s what I did. It’s a wake-up now. The job’s not done yet. I still have to recover, lock myself in a room and get ready for this race.
“I was a little bit tired today, but that was just because of the heat and having run the 10,000m.
"In the 10,000m I was on the edge [mentally], nothing would get in my way. Now I’m a little bit distracted, so I need to get back in the zone and focus.
“You’ve got to get through the rounds. No-one is going to give it to you. Now I’ve got to recover with an ice bath and see the medical team and get ready to go again.
“It is possible to win another gold, but you look at the other guys and they’re ready for me. I just have to get myself back in that frame of mind and get ready, but I’m still hungry and I still want it.”
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