The left-back says Brazil's tense penalty shootout victory over Chile in the round of 16 took a toll on both the players and the fans
The Selecao needed penalties to decide the game after it finished 1-1 and were fortunate not to concede when Mauricio Pinilla hit the crossbar in the dying seconds of extra time.
And Marcelo, who scored during the shootout, told Sports Spectacular that to win in such a dramatic manner was emotionally draining for everyone involved, though he was thankful to team-mate Julio Cesar, who saved two of Chile’s spot kicks.
“To win the World Cup, you have to know how to suffer,” he said.
“We learned to suffer. Julio Cesar had to save us. He was [one of the] most nervous, but then he was solid. We are now moving on to be champions.
“Emotionally, everyone was dead. It was a test that we passed. I looked at the crowd, there were people screaming and crying. Winning was a joy.
Brazil will face Colombia in the quarter finals, a side who have won every game at the World Cup so far and in James Rodriguez, boast the top scorer and one of the stars of the tournament.
“Colombia have a great squad and many talented players,” Marcelo continued. “But we are the Brazil team and we play with everything.
“From the first game we are evolving. We improved a lot but we’ll talk to [coach Luiz Felipe] Scolari and see where else we can improve.”