Target of planks and crunches (4)
I believe the answer is:
core
(Other definitions for core that I've seen before include "The centre of an object" , "Central zone" , "Inmost part" , "The centre part, as of an apple" , "Kernel" .)
I believe the answer is:
core
(Other definitions for core that I've seen before include "The centre of an object" , "Central zone" , "Inmost part" , "The centre part, as of an apple" , "Kernel" .)