if you want to condiciton them before you go which pretty much means pumping them up...
before the day you fish.. pick out the ones you want to use.. then rinse them clean.. after that take a clean bucket with a lid... like one for butter and stuff would be perfect. but it has to be clean. or eles you will kill them
then place the bottom with the soil which u keep them in. or worm bedding which is soil mixed with news paper... pack that tight... place in worms.. then a top it off with damp paper towel.. have enough towel to pack down on the worms. it wont kill them dont worry.
then put in the fridge for like 1-2days... and the worms will absorb the water and make it look jucier... thats if your going to use the entire worm... or eles is a waste if your just chopping it to peices