One Gallon's Worth!
On January 6th, I gave blood! I've been a mostly-regular donor for years, but it has really helped my track record that my company sponsors quarterly blood drives. So, with my double-red cell donation, I reached one gallon's worth of blood donated since I've lived in Kentucky! (Actually, I suspect that I've achieved several pints more than that, and that they credited the "missing" pints to my evil twin.)