Identify some safety preparations that are common when exercising in extreme cold or extreme heat

When you are in the cold, it is important to stay warm by wearing very warm clothe. When you are in the heat, it is important to wear proper clothing like sweat absorbent shirts. It's also important you stay hydrated by drinking a lot of water.

obesity is a result of eating unhealthy junk food which increases the fat content of the body and makes you obess. it is also further because of not doing proper exercise and not participating in any physical activity.

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."