Most of us are taught to believe that lying is wrong. But it seems that everybody tells lies - not big lies, but what we call "white lies." If we believe that lying is wrong, why do we do it? Most of the time, people have very good reasons for lying. For example, they might want to protect friendship or someone's feelings. So, when do we lie and who do we lie to? A recent study found that the average person lies about seven times a day. Here are some reasons why.