Bass Sausage Sadness

As some of you know, I am a bass player, not by profession but by love and passion! As I have, over the last few months begun to fall in love all over again with this most magnificent of instruments I have come across a very sad fact... What were once fairly dexterous little bass sausages are now limp little carrot sticks of sadness!! My fingers, my wrists and my forearms have fallen so out of shape that I am ashamed to call myself a bass player. Where once I could slap for England, I can now barely make it through the exercises I used to frequently use. Where I used to be able to play some obscure patterns and grooves, I've just lost it!