A gentle reminder that you need to lose weight. Created for a mate at work, as a joke when he was listening to a 'free presentation' online that was actually a sales pitch. This book was originally a powerpoint presentation, after having a laugh with it when showing other work colleagues and then my partner when i got home, i thought it would be selfish not to share the joy. The advice inside probably would help you lose weight too, so that can be it's useful function.