Positive, exercise helps your respiratory and circulatory systems get stronger.
Financial expense, guilt and depression, unplanned pregnancy, increased std exposure
increased injury and accidents is the only one that isnt correct
In many places a female who wants to work to be a mechanic would be told that she would need to choose a different career to work towards.
You could add more to this but that is basic idea
There are two types of fast twitch muscles (fast twitch oxidative glycolytic which are red in color, and fast twitch glycolytic which are white in color).
It depends on how fit/active they are but there is no set amount I would say at least 10
