I will only post links to books I've read and would recommend. (Incidentally this is not really something I'm doing for profit - there has been one book order since I started this blog......meaning that so far I've made 51 pence! I don't think I'll retire just yet.)
Also I think that since my adverts are for the UK Amazon and most of my visitors are from the USA I may not be targeting my audience correctly...
Then again I am not doing this for the money....and just so this post isn't focussed entirely on my advertising strategy, here is an interesting study with another reason to exercise and stay lean:
Obesity and lack of exercise could enhance the risk of pancreatic cancer