After a long hospital stay and a hip revision/dislocation/broken sacrum my father's muscles were cramping for hours on end when he tried to move, leaving him in screaming pain. The doctors could do nothing to help except sedate him which just pushed the problem down the road. I took a chance and ordered BioWave. We started using it and it gradually started to work over the course of a few days. Within a week there was just the odd twinge of cramp and nothing that prevented him from moving. I learnt to charge it overnight and then do little half charges on the half hour off so that we were able to do a full day of half hour on and half hour off. Now the pain has completely gone and recovery can really get going. The physios/doctors were very dismissive saying "it's just tens" despite me repeatedly saying it wasn't and when they had tried their tens machine it had achieved nothing at all. VERY grateful to BioWave. Highly recommended. Now neatly put away and ready for another day - but hope there won't be one!