I have this problem...
when I reach the state in which my body is paralyzed, I'm beggining to have strabge feelings...
the heavyness of my body is no suprise,I believe that should happen...
but as I kept staying in that state for some time...
My left leg felt very different...the feeling was sort of close to pain,but not really...painfull.
that feeling really discomforted me,and I found it hard to ignore.
I have no Idea where it came from,but it keeps coming,again and again,only when I mediate,and only at my left leg.
this prevents me from concentrating and puts my mind in a chaos of thoughts.afterwards I either fall asleep if trying to ignore it,or I stop.