You have been gardening in a squatting position for 20 minutes. you stand up quickly to answer the phone and feel light headed. after about 10 seconds more you feel fine again. what was the cause and correction of your faint feeling?

it's false.

"every person has their limitations which prevent us from accomplishing something. some are better than mathematics for example and some are worse. those people who are worse might never be able to become mathematicians, but that does not mean that they would not be great at doing something else."