Studies show that the mere act of shaking hands makes people twice as likely to remember you, and with just a few quick pumps, you can say a lot about yourself: Too much oomph, and you appear domineering. Come on too soft, and exude incompetence. Fret too much, and you’re headed for a clammy clasp that’ll send your fellow shaker into instant recoil.
But the right shake, on the other hand, can convey openness, respect, confidence, and vitality. “It says ‘I’m a person of substance, I’m to be taken seriously’
More on going palm to palm here.