Benefits Of Eating Dark Chocolate And Why You Must Eat It 7 Days A Week! Good things come in 7. Seven is a lucky number. There are 7 seas, 7 continents, 7 wonders of the world, 7 days in a week and I’d like to introduce you to 7 ounces of dark chocolate. That’s right! The recommended weekly serving of dark chocolate is 7 ounces. Now for the bad news. Seven ounces isn’t very much, so try to limit yourself to around one square per day.