Hey!
I have some thoughts, but first a description of me might be in his place 
I am 36 years old and have been exercise in most of my life. In recent years, running and heavy weight training have taken great place but also a little triathlon. I have had a problem with my back for a long time (10 years), ache in the lumbar leg and upper back. But now I have started focusing more on mobility and good posture and quickly reduced pain neck, back mm.
Via a mate I got up the eyes of Gymnastic bodies. After training through Fundamentals, I have now taken the foundation.
Now to my questions; How often do I work out a week? And I would really like to buy all the things that GB suggests as "add on" this week but it's so expensive! Can I get well on Foundation only?
Finally, I apologize for my bad English.
Sincerely/
J from Sweden