The 4-Hour Body

I think anyone setting out to improve their physical fitness could benefit from this book. Tim Ferriss clearly knows what he's talking about and he can demonstrate results. You should also feel pretty good about yourself when you put these ideas into action.

This book has a lot of dietary advice as well that can supplement an all-round fitness push.

It also allows you to take some huge steps forward if you want to really dive in. Overall, it has some great ideas to help you develop your physique and make changes.