IRS Tax Tip 2011-48, March 9, 2011. When filing your federal income tax return, taxpayers can choose to either take the standard deduction or to itemize their deductions. The IRS has put together the following six facts to help you choose the method that gives you the lowest tax.
Calculate the correct amount of protein. According to Drugs.com, 12- to 14-year-olds should consume approximately 1 gram of protein per kilogram of body weight each day. Girls aged 15 to 18 need slightly less protein, or 0.9 grams per kilogram of body weight. Find out how many kg your teenager weighs by dividing her weight in pounds by 2.2. For example, if your 13-year-old weighs 100 pounds, she weighs 45.5 kilograms, and should consume about 45 grams of protein each day.
  Although adolescence spans a period of five to seven years, teens do most of their growing during an 18-24 month period called the growth spurt.. To support this rapid growth, teenagers need to consume lots of calories and other nutrients.    Calories   Teenagers need lots of calories to support rapid growth. Girls need approximately 2200 calories, while boys need 2500-2900 calories.    Protein   Protein is also necessary for physical growth, and should account for 15-20% of total calories.   Calories   Teenagers need lots of calories to support rapid growth. Girls need approximately 2200 calories, while boys need 2500-2900 calories.     Protein   Protein is also necessary for physical growth, and should account for 15-20% of total calories.