Real Madrid ace Mesut Ozil says there's great spirit inside the locker room.

Ozil feels very comfortable in the squad and is only looking to improve his game, starting with building on his physical prowess.

"I am taking a lot of care with my body, but I have to be careful that in building my strength I don't lose my speed," he said. "In Real Madrid there are players with great physique, but Cristiano Ronaldo is unique. Moreover, he is a great and very helpful person.

"In the Real Madrid dressing room you feel very comfortable, everyone is telling jokes. It doesn't matter how big the institution is, the players have their feet on the ground."