Ronaldo has admitted he needs to lose some weight before making his debut for Corinthians next year.
Ronaldo completed a shock move to the Sao Paulo club earlier this month, snubbing Flamengo who had opened their doors to the three-time FIFA World Player of the Year while he rehabilitated a knee injury that ended his time with AC Milan.
After training with a ball for the first time, Ronaldo admitted he does not yet know when he will be able to make his debut, and the man whose shape and fitness has so often been questioned also said he needed to lose a little weight.
''I think I will lose five or six kilograms during pre-season,'' he told Corinthians TV.
''People exaggerate as soon as they see some difference in the size of the body. I am overweight, but it's quite natural.
''It is the result of a long time of inactivity and I am just back in training.''