I've e-mailed someone who went to the Ann Wigmore Institute, and she told me that with wheatgrass you can have amazing results. I asked her about normal grass, and she said you shoudn't do that, because it can be dangerous. It really has to be the wheatgrass. So I'll experiment with wheatgrass... I'll let you know on this forum what the results are till so far (so that will be in several weeks).
Thanks for your info,
Caspar