Getting a bit bored with the same old cable curls, preacher curls barbell curls are there any other bicep curls which are just as good out there for a change??
You could aways try lying high cable curls the exercise that Markus Ruhl uses I have been doing them for four weeks and have made some great results also try one arm cable preacher curls or even standing one arm Cable Concentration Curl low pulley and high pulley.