Doctors say the strongman likely ended up fainting because of the tremendous exertion he had placed on his body to lift the huge weights.
Strong and sudden efforts can sometimes causes blood pressure to momentarily drop sending athletes crashing to the floor.
'It happens sometimes, but that was the first time for a while,' Tokola said cheerily afterwards.
'I have a problem where sometimes when I give 120 per cent I pass out. It's when I put my body through too much in that moment.
'Doctors have investigated and they think maybe it's to do with blood levels in the brain when I lift heavyweights,' the Finn added.
Tokola, who was making his first Olympic appearance, notched 145kg in the snatch for a combined total of 320 to lie ninth after the Group B event in the men's 85kg.
'I don't remember anything about the fall but I have a little bit of a headache now, said Tokola, who is due to get married in two weeks.
Spectators gasped as Tokola tumbled.
His coaching team rushed to his aid and were able to get him on his feet within a minute, leading the dazed lifter back on stage.
'Even though it will have been on TV, I don't feel any embarrassment because I won't see it, so I don't care,' he said.
'I'm an Olympic athlete now and I'm so happy.'