Practice cardiac coherence Souffle is a colorful breathing game that helps you practice cardiac coherence, a breathing technique that is useful to reduce stress and improve overall health. Build your own safe space with cute characters and objects, choose between a variety of music and sound and go breathe! Customize your session Choose between a large choice of characters, objects and decorations. Organise your safe space as you want, and set you own mood. Save up to 3 presets. Celebrate your progress Unlock a new stickers each day that you breathe, there is up to 365 unique stickers to collect. Rearrange the sticker book as you please to create adorable scenes. Easily share your progress with your friends.