FIFA 15: How To Unlock Every New Celebration
6. Muscle Flex
The celebration Mario Balotelli made famous during the Euro 2012 semi-final against Germany. Many different memes were made in it's honour and now it has made it to FIFA's games,.
You need to pass level 16, buy it, then hold R1 and flick R3 up and down to use it. For Xbox it's the same story, hold RB and flick RS up and down.