If you think the videos are detailed enough, you are wrong! As a sports nutrition student, and having learnt from Eric’s videos, these books not only provide unbelievable information, it has helped me relate to clients much easier, as well as backing up my own nutrition and training! Even if you are just the average gym goer, I can only assume you want optimal results? Then you would be a fool not to invest in a LIFETIME updated book! You won’t regret it!!