Far far worse than the over-muscular handshake is the Alpha male palm flat down handshake; as practiced by boorish domineering types like my boss. This is where the shaker offers his fat meaty paw with the palm down, forcing you to shake with your palm upwards, which is a position of supplication and subordination.
The upwards palm comes from the same type of subordinate body langauge as people who look around anxiously as they enter a room, who carry stuff in their arms and walk fast, all of which, I heard on the radio recently, judges are told not to do on entering court.
The way to deal with an Alpha male downwards palm shaker is, apparently, to place your hand over the top of his, which will leave him confused and embarrassed without understanding why. I haven’t had the nerve to do it to my boss yet.