The parathyroid glands are four tiny glands, located in the neck, that control the body's calcium levels. Each gland is about the size of a grain of rice (weighs approximately 30 milligrams and is 3-4 millimeters in diameter).
There are now 30 NBA teams. There are two conferences with 15 teams each. There are five in each of three divisions within each conference.
If my memory serves me right, there are over 20,000 members in the National Strength and Conditioning Association and last time I checked there are only 30 NBA teams and about the same in the NFL, NHL and MLB respectively.