[Paddlewise] Legs falling asleep

My friend and I have both had the problem of our legs falling asleep, (who hasn't?).  We have very different body shapes and sizes, however for both of us a rolled up towel under the thighs, right at the edge of the seat, has been the answer.  I don't know why this is, however I am sure that some of the more scientific types around here can help us out.
Regards,
    Aaron Hunt


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