What’s the link between health, drinking and wearing a watch?

[I Am Spartacus]

I’m intrigued to understand the link between watches, and “having a drink”, or “wearing in good health”. I hear these phrases only from watch folk. Don’t get me wrong, I love a good rum or whisky, and would never wish anyone anything other than good health, but to me it’s an odd pairing. Other than being nice or polite, what’s it all about?

Hears to everyone’s health!