How to brake large stones
The largest stone I ever passed was about 3x5 cm, irregular shape. I felt it, though no pain. I took the picture with my webcam, so if your e-mail me, I'll reply with attachment.
I could recommend to brake stones before cleansing. Take hot water bottle and warm up the area between solar plexus and to the right above lower ribs. After about 1 hour; do some bending exercises. here is effective one:
"windmill"
-stand with your legs open wide, feet parallel, arms horizontally in line with the shoulders.
-bend forward keeping your back straight and arms alined.
-start rotations around waist trying to touch inner feet with your fingers.
-keep going for 1-2 minutes.
regular sauna or hot bath warms up the body and helps to crack stones; activities such as jogging or aerobics will brake them apart.