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.
At age 16, Ronaldo was promoted from Sporting's youth team by first-team manager LÃ¡szlÃ³ BÃ¶lÃ¶ni, who was impressed with his dribbling. He subsequently became the first player to play for the club's under-16, under-17, and under-18 teams, the B team, and the first team, all within one season.