I actually have some of those as I used them for all three of my joint replacements (I am bionic woman !! )
The trouble is ,I am jerking around so much that I would have to tape the packs to my legs. I am taking 3 pills at bedtime and this is helping hugely .Its just about enough to keep the worst of the jerking damped down.I have tried CT several times and it bis always the restless legs that cause me to fail,so this time I am mitigating against it. I have Myasthenia Gravis so my need for sleep is huge.I realise this sounds like an excuse !
If I keep my mind occupied I can just about get through the day without any pills,
Each hour is one nearer recovery for us all