Why do we shake hands with our right hands?

The western custom of shaking hands has its origins in the past. Centuries ago men carried weapons; usually in their right hands (most people are right-handed). When one man wanted to show friendship to another, he threw down his weapons and offered his empty right hand to the other person as a sign of peace. The custom has remained. You should shake hands firmly as it is a sign of friendliness or agreement, and a limp, weak handshake does not seem genuine. But you have to be careful not to overdo it, or hurt the other person’s hand!