Domineering men often squeeze the hand of women during a greeting. The clever woman moves her index and little finger in toward her palm preventing a crushing handshake. This negates his dominant act and keeps her in equal control. So adopt a handshake that is firm, yet not crushing. Convey confidence and professionalism, not dominance.
Posture is another aspect of body language.
A slouch can suggest lack of interest or enthusiasm. Standing straight with your weight balanced on each foot makes you look confident and relaxed. The mannerisms of honest people produce belief. Even animals sense this. One particular mannerism involves the way palms are shown.