xxheidiandparisxx
Chatty Member
My physiotherapist and PT. They put excessive pressure on the lower spine, unless your form is brilliant and most people's isn't. Yeah they work more core muscles than crunches, planks etc but according to both of them (separately) the risks/downsides outweigh the benefits, much better off doing other core exercises..
Oh well. A new one to me…
(had to edit due to auto correct)