Bici, what do you mean, "some of the exercises"? How come I can only find one exercise mentioned in that article. Am I nuts? OK, these questions may be unrelated, but still...what are the other exercises you saw in the article??
"My predominant feeling is one of gratitude. I have loved and been loved;I have been given much and I have given something in return...Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and an adventure." O. Sacks