Thank you for your reply, drummerxyz!
Are you lying down to do this exercise or are you sitting up straight without leaning against the back of the chair as suggested in the video?
I lie down, as it's also suggested. It feels good!

I do the active exercises during the day, and the Small Universe at night. If it's really so crucial to do the ending exercises (and that's the confirmation I am looking for), then I will have to start doing it sitting up!

The purpose of the ending exercises is to harvest the chi.
Right, and my question is: how much do I lose if I don't harvest chi? Does that mean that all the meditation before the end will get lost (in terms of benefits) if we don't harvest chi? If I remember well, Chunyi says in one of the CDs that even if we sleep our subconscious is still receiving the message. But I am not sure if that also applies to the ending exercises, that are somehow physical. I guess I'd still have chi... but as it's only a guess, I am looking for more precise information.
Thank you!