Example...
"Buy this book on how to lose weight by eating less and exercising more." = Very few sales
"Buy this pill which causes fat to quickly and effortlessly melt off of your body" = Lots of sales
The closer you can make your actual offer seem like magic (without bending the truth) the more sales you will make.
"Discover how thousands of people have already used these shortcut weight loss methods to lose up to 19lbs in less than 30 days - without regaining a single ounce."