Is it ok to put cocoa powder in the shake?

Not yet begun UltraMetabolism Not yet begun UltraMetabolism

Not yet begun the UltraSimple Diet Not yet begun the UltraSimple Diet

It looks as though the meals that you can order have cocoa powder in the shake but the book doesn't say anything about it.  I just want to make sure that it's ok to use regular cocoa powder and find out if there's a limit on how much we can use.

 How much do we put into each shake and is there a limit on the total amount of cocoa powder we can consumer per day?

 Thanks!