I Sulphur chronic back and I just tested this day and above nuit..je lie down in the back (not against indicated in the instructions for use) and there is a real happiness ... I think we should use it in moderation and not for 1h30 in maximum programming .. 2/3 day the position is very agréable..de night position 1 is much more significant than 2 or 3 under the duvet because heat dissipates more slowly and the temperature was quick to climb and it is less enjoyable and relaxing ..I used in 15-20 minute session left me to serve again when the pain this is more
