I'm a dabbler who wants to know "something about everything," so I love books like this. The one hundred things are all over the map but are each given just a few pages, which results in lots of detail for some ("wash your hands") and ridiculous oversimplification for others ("eat right," "get organized"). The gimmick is that an expert of some kind writes each section, so Grete Waitz talks about jogging, Dean Ornish about relaxing, etc. The only chapter I learned something new from was "wash your hair" (Frederic Fekkai), which says to apply conditioner only from the ears down, and that to have really glossy hair, you should rinse in cold water. That explains why washing my hair in the sink, which I don't like but had to do when we lived in France, felt like it was good for my hair.