1 Required for building and repair of body tissues (including muscle) 2  Enzymes, hormones, and many immune molecules are proteins.  Essential body processes such as water balancing, nutrient transport, and muscle contractions require protein to function.
Previous Game. Player Profile. A much-vaunted prodigy when snapped up by Manchester United from Sporting Lisbon in 2003, Ronaldo is now, alongside Lionel Messi, the best-known player on the planet, and a hero for Real Madrid and Portugal.
Ronaldo scored his first goal for Manchester United, by taking a curled free kick, in a 3-0 win against Portsmouth, in November 2003. However, and despite several promising starts, Cristiano Ronaldo's first two seasons in Manchester United received mixed reviews.