The 10 grams of protein that most of us get from cereal and milk at breakfast, he added, is not enough to get the bodyâs muscle-building machinery working at full throttle. For that, we would need to eat about 25 to 30 grams of protein, the amount in a three-egg cheese omelet.
For example, the prefix kilo means times a thousand or one thousand of the units in question. So  kilometre means one thousand metres and kilogrammeans one thousand grams.
an informal abbreviation for one thousand used in expressions where the unit is understood, such as 10K run (10 kilometers) or 700K disk (700 kilobytes or kibibytes). Note that K is also the symbol for the kelvin (see below) and is often used as a symbol for the karat. Also note that the symbol for the metric prefix kilo- (1000) is actually k-, not K-. In computer science, K often represents 210 = 1024 (see below under kibi- and kilo-).