First of all the title is an English reference to a comedic characters catchphrase [Alan Partridge Aha]
From another thread:
My first meditation session took place in a group led by a Vedanta-trained instructor.
The only thing we were told was to close our eyes, breathe in and rhythmically join in an OM outbreath in unison.
We were about fifteen to twenty people, sitting cross-legged in a circle, and the session lasted about twenty minutes.
I still fondly remember it as the most "Aha" moment I ever lived.
The fact that the instruction was so scant made the experience more earth-shattering.
Like they say, a picture is worth a thousand words.
These 'aha' moments are wonderful. I remember two: One when doing a very simple breathing exercise and twist, from yoga book. The exercise really was more akin to a qi ong exercise. Basically it loosened my up tight spine in a way the vigorous martial arts were failing to do. So gentle, so easy. "Aha" moment.
Another also physical art orientated, was when doing a kata (prearranged fighting moves) involving a double strike of elbow and fist to the back, that again twisted the spine. I suddenly realised I was doing a dynamic form of yoga - 'aha'.