Stadion's Sports and Martial Arts Training Discussion

I tried standing straighter and squarer today and I certainly noticed a difference. Thanks.

on page 46 of stretching scientifically the leg raises to the back state that you should be feeling the stretching in the front of your thighs. I don't. Its always my hamstrings. Am I doing it wrong? I should point out I have been following the routines for about 6 months. Being an old (44) stiff ru...