And Neymar was fit enough to take part in Wednesday's session, with Brazil preparing for their next World Cup clash against Costa Rica on Friday.
The Brazilian soccer confederation said the injury was not serious, adding Neymar left as a precaution and would be back in training on Wednesday.
It also posted photos of him practicing, including one showing the playmaker touching the ball with his right ankle.
Brazilian media had already been speculating that Brazil could be hiding Neymar's real condition after he couldn't finish practice on Tuesday.
I suppose we will only know the answer to that question when the next couple of matches are played in that Group and I do think all eyes will be on Switzerland to see just how they get on in those matches for sure! He was visibly in pain as he walked from the field accompanied by the team's doctor.
At one point, he bent down and grabbed his ankle, but tried to continue playing anyway.
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Neymar was fouled 10 times in the first match against Switzerland which Brazil drew 1-1. He tried to continue playing but a few moments later made a decision to leave, kicking a ball away with his left foot before limping away.
Team-mate Philippe Coutinho, who scored Brazil's stunning goal against Switzerland, confirmed Neymar felt pain in his ankle but played down the injury.
Brazil and Switzerland are two points behind group leader Serbia, which defeated Costa Rica in its opener.
Neymar was out all of March, April and May with a fractured right foot and sprained ankle after he was injured in a French league match in late February.
Brazil striker Neymar new hairstyle before the start of the world Cup.