No, playing chess affects your sex ability.
Sex and chess

does having sex with yourself count ?
it's masturbating not sex bro
no then

does having sex with yourself count ?
it's masturbating not sex bro
"The greatest love a man can have is the love he has with himself." Raj Koothrappali

if you have sex and then get kidnapped by the sexee and they don't pay the ransom before the start of the tournament, then yes that could affect your results, first game could well be a default.
Does having sex affect your chess performance especially prior a tournament?