Dear me, Yes I believe it was Chris who said "..someone walking over... grave.." But the idea's the same.
For me (that is... ME, not you- me, well maybe it's you?) the full blown OBE comes when I've saved enough energy. Again for myself, the highest and purest form of energy is gained through impeccable living.
I think we spend (bleed in some cases) energy all over the place by indulging in high useage thoughts and actions like anger, improper sex, even overempathy (which is love without wisdom); not eating, sleeping and drinking healthy; and too much busy-ness and worry.
Motives are key too. There are "many mansions" so "seek first His kingdom and His righteousness and all these things will be added to you".
Back to shuddering...try not to let it as I say 'degenerate' into a shudder. What I do is when you feel one coming on, tighten your little buttisimo

and imagine millions of microscopic light particles 'activating' throughout your body. Then quickly organize them together through your intention and draw them into a upwardly direction and feel them resonate within you. Imagine them filling your entire body as if those organized energetic light particles were the real you, your true essence.
I will try vocalizing the next few times to see if that'll get it past the throat area. Thanks Matthew.