Too early to evalute the overall effects of the workout, but I do feel a general increase in perfomance as to how I react to solving problems, and maybe a slight improvement in memory, however I will have to put these to a real test.

As for suggestions, it was tough initially to stick to the 20 minutes, but now I am getting used to it. I have been sticking to the exercises in the post, but I feel a need to find new ones, and maybe take it to a slightly higher level. I will post the links I come across.

If anyone else has given it a try, do post your thoughts and comments.