___ yourself (put in effort) (5)
I believe the answer is:
exert
(Other definitions for exert that I've seen before include "Apply (force)" , "Strain" , "Act upon" , "Strive" , "Apply (pressure)" .)
I believe the answer is:
exert
(Other definitions for exert that I've seen before include "Apply (force)" , "Strain" , "Act upon" , "Strive" , "Apply (pressure)" .)