Picture of Argyrios Poungouras
Re: How do I say "sit and rest" in Greek
by Argyrios Poungouras - Sunday, 20 September 2015, 12:59 PM
  You can say:
"katse ki arakse" (κάτσε κι άραξε). This is more slangish smile

or

"katse (or kathise) kai halarose" (κάθισε (ή κατσε) και χαλάρωσε).

or (more literal translation)

"kathise kai ksekourasou" (κάθισε και ξεκουράσου). This is probably the one you're looking for smile