The full-back, a member of the victorious Brazilian team in 1994, reckons a bonk does you good during the finals - as long as it is not with a team-mate's missus!
Branco, 46, said: "What harm is there in it? My son Stefano was conceived during the 1994 World Cup when I spent a day off in San Francisco with my wife.
"Sex is good for you. It relieves tension. We hadn't won the World Cup for 24 years, so it didn't do us any harm.
"Sex at the camp should only be ruled out with a team-mate's wife. What you can't do is stuff your face until four in the morning or stay in a brothel.
"We were very professional when we won the World Cup in '94. We went there to win it.
"Drinking was allowed and we'd have three or four drinks to relax. What's wrong with that?
"If it were a problem, then there wouldn't be any football in England or Germany, where they drink beer, or in Italy, France and Argentina, where they drink wine. It's part of the culture.
"There was drink in '94, I conceived my son and everyone said we were perfect physically and tactically. What's the problem?"
Robinho scored two goals and Kaka added another as Brazil easily defeated Tanzania 5-1 yesterday in their last World Cup warm-up in Dar Es Salaam.
Sub midfielder Ramires scored his first two international goals for the Samba stars in the second half.
Brazil started with all their regulars bar keeper Julio Cesar, who is nursing a back injury.
If he fails to recover in time, Tottenham ace Heurelho Gomes is itching to become the South Americans' No 1.
Gomes insists he would not let down his country if he gets the nod to start against North Korea in their opening group game a week today.
He said: "Yes, it's a chance for me. I feel good but I think Julio Cesar will be fit."