To him, it’s as regular as clockwork. As a Boston-based trainer, he has experienced twenty years of whipping civilians into shape. That’s twenty times the summer sun has dipped over the horizon and twenty times it has returned nine months later. To Paternostro – and a slew of others in the same profession – there really are only two dates to speak of, the two days out of the year when the clients come rushing into the health clubs in tidal waves. The first is the January 1st Resolution clan.