Use this tip from The Real Food Grocery Guide to get all the juice (and nutrients) out of a lime.
You’ll need: A lime, A knife, A bowl
To juice the lime:
Cut the lime lengthwise slightly right and left of the center, so that you have three pieces including the center “core” of the lime. Repeat with the “core” of the lime – cut slightly right and left of the center so that the center of the lime looks like a column, with only skin on the ends.
Take the four sides and juice them into the bowl as normal, using your fingers to squeeze the outside so the juice drips into the bowl. To juice the remaining center column, hold it by the ends and twist it towards the bowl.