"A month to reset your body. A month to tackle the challenge of changing bad habits that make us store fat, sleep poorly, lose energy, or grumble about these nasty stomach acidities. Alone, the process is difficult. Boosted by a group effect, it's better, even fun. And this is where the "new" technologies come into play in their best role."

Want to know more about the challenge, about using whatsapp in this reset process? Visit the Time website.