We all want a healthy lifestyle…and most of us want to lose weight! Here is a guide to help you reach your goal. The research explores the most common diets such as Paleolitic diet, Zone diet, Atkins diet, Weight watchers and many others. It also presents a chart of how much calories a person burns in 1 hour engaging in various physical exercises such as cycling, playing football, basketball or walking. It also analyses the obesity surgeries (gastric bypass, gastric sleeve, gastric band, and gastric balloon). Pros and cons of each weight loss method are reviewed to help you chose the right option for you. Because the more knowledge you have the better decision you will make!