The duo got to 10 hits of the ball off their heads before Ambrosio made a volleyball-style bump, unable to keep up.
Ronaldo previously juggled in his underwear for GQ.
The video was made as part of a photo shoot with the model.
Other than playing ball and doing photo shoots, Ronaldo also does socially-oriented events, such as meeting a boy from Lebanon, who lost both parents in a suicide bombing.
He also disguised himself as a homeless man and performed football tricks to confuse Madrid pedestrians in August, and another time dressed up as a homeless man to surprise a fan.
