State of health (6)
I believe the answer is:
fettle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">state of health</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fettle that I've seen before include "Be in fine . . . . . . to be in excellent form" , "Condition or trim, often fine" , "Condition (usually fine)" , "A state of fitness and good health" , "Condition, trim - best when fine" .)