This Valentine’s Day, anniversary, or whenever you feel like showing some love, give this card to someone to let them know you’re thinking of them. Not only are they in your thoughts, but your amygdala is active, your brain is releasing dopamine, and your caudate nucleus is stimulated. These are all parts of your brain’s reward and pleasure system associated with feelings of love. Blank inside. 4.5" x 6" folded. 100% Recycled card. 100% Recycled envelope.