Countless scientific studies have shown that simply petting a puppy can decrease your cortisol levels (the stress hormone) & boost your serotonin levels (the happiness hormone)! Thanks to this ingenious book you can now get allll of the wondrous brain benefits of petting a puppy without all the rolling in mud, howling in the night, attacking the postman, eating household ornaments, excruciating vets bills, picking up their sh*t etc.