I'm wondering where the term ballpark estimate comes from? Sometimes ballpark is said stand-alone to mean a rough estimate, as in these numbers are a ballpark.I understand it must come from baseball or some other sport.'m wondering where the term ballpark estimate comes from? Sometimes ballpark is said stand-alone to mean a rough estimate, as in these numbers are a ballpark.
You need protein for your muscles, bones, and the rest of your body. Exactly how much you need changes with age: Babies need about 10 grams a day. School-age kids need 19-34 grams a day. Teenage boys need up to 52 grams a day. Teenage girls need 46 grams a day. Adult men need about 56 grams a day.
According to the Institute of Medicine, 0.8 grams of protein per kilogram of body weight, or 0.36 grams of protein per pound of body weight, is used to determine protein RDAs. Therefore, a 50-year-old woman needs a minimum of 0.36 grams of protein per pound of body weight each day, equaling about 49 grams of protein per day for a 135-pound woman.