I think you mean Wii-lii Nii-lii. Ahem, sorry.
I'd say the best way to avoid injury or death is to NOT LET GO of the Wiimote. So, when bowling in Wii Sports, don't actually throw it like a ball, but rather just keep it firmly gripped in your greasy paws. This may seem obvious, but someone I know actually think it's meant to be thrown or whatever.