Hello! I was intrigued to hear Tim Ferriss's podcast with Coach Sommer. The training sounds fantastic. Could anyone please advise if this could be appropriate for me. I have previously been a runner & tri athlete, (with very little flexibility). I have been a mum and couch potato most recently, and also out of action due to a disc bulge in the Cervical and Thoracic spines in 2010. Fortunately no surgery need, just bed rest and pilates and all has come good. However I have lost all core strength and stability and don't do any heavy lifting but I have started playing tennis again. Are there any considerations for taking up the GST training, or am I better to go back to Pilates - I'm a little nervous? Many thanks!