Chelsea defender David Luiz eager for tournament to kick off

Luiz admits Brazil have a great opportunity to win World Cup on home soil

Describes atmosphere in Brazil camp as best he has ever experienced

Claims playing big games for Chelsea helped him prepare for World Cup

Barcelona's Dani Alves enjoying 'positive' pressure on Brazil's shoulders

Brazil defender David Luiz says he is having sleepless nights worrying about the World Cup, while his team mate Dani Alves describes the intense pressure of being tournament hosts as 'delicious'.

'We are anxious, I wish it was starting tomorrow,' Luiz said at a commercial event in Sao Paulo on Tuesday.

'Some nights we don't sleep. But that's all part and parcel. It is a great chance and we are privileged to play a World Cup in front of our own fans. I can't wait for it to start.'

Lucky strike: David Luiz says the Brazil squad are privileged to play a World Cup on home soil

No fear: Despite World Cup pressure, Luiz showed no signs of cracking at a promotional event in Sao Paulo

A cut above: Luiz has claimed playing big games for Chelsea has helped him prepare for the World Cup

Veteran: Barcelona defender Dani Alves is comfortable with the expectation surrounding Brazil

The articulate Chelsea defender said the atmosphere in the Brazil squad was the best he has experienced in more than a decade as a professional player.

He added that their unity of purpose would help them to cope with the pressure of playing a home World Cup.

'We have to find a balance,' the 27-year-old Luiz told reporters. 'Up to a certain point (anxiety) is good, it gets you thinking about the game. But too much is harmful so we'll have to work on that and that is easier to do as a group.

'This group is very open, everyone has the right to give their opinion, and everyone is going to help each other.'

He added: 'We really want this, our group is true in all we do, there is a great atmosphere.

'We are happy, anxious and we have two more games in which we'll make last-minute adjustments and be ready to start with maximum force.'

Bring it on: Luiz said that he loved to live with pressure and can't wait for the World Cup to start

Brazil kick off the World Cup against Croatia on June 12 in Sao Paulo and then face Mexico and Cameroon in their other Group A games.

They play two warm-up matches against Panama in Goiania on June 3 and then Serbia in Sao Paulo on June 6.

The host nation are favourites to lift a record-extending sixth World Cup, but they will come under pressure from their often fickle fans.

Dress rehearsal: Luiz was part of the Brazil team that won the Confederations Cup on home soil

Barcelona's Alves said that although Brazil's 23-man squad might not have much World Cup experience they have all played at the highest levels and will not be fazed.

'It's a delicious pressure, it's pressure we like to feel,' he told reporters.

'I think that you conquer things when you are challenged, if you are not challenged then it is hard to really crave anything. So we look at it positively.'

Luiz said he was used to playing big games at Chelsea and, with three weeks to go until the tournament gets underway, he is feeling confident.

'I play for a big, big club and when you play for big clubs you play many big games and that helped me prepare for the World Cup,' he said.

'This will be the best teams in the world and best players in the world and I am ready for that. I love to live with the pressure, that's my life, I chose my job. So, let's do it.'

Driving force: Alves will hope his surging runs from right-back will help Brazil into the World Cup's latter stages

Favourites: Brazil start with a game against Croatia before playing Mexico and Cameroon in Group A