They are meant to be eaten one at a time, which is why they are individually wrapped. However several runners reported eating two at a time whenever they felt like they wanted more energy than usual. If you've never had one before we definitely recommend starting with just one and waiting at least 30 minutes to an hour to see how your body reacts before you have another one. Be warned however, they really are delicious and you'll be tempted to eat several. Self-control my friends, self-control!