Sport I play in good health (6)
I believe the answer is:
prosit
'good health' is the definition.
(I've seen this before)
'sport i play' is the wordplay.
'play' is an anagram indicator.
'sport'+'i'='sporti'
'sporti' is an anagram of 'PROSIT'.
'in' is the link.
(Other definitions for prosit that I've seen before include "All the best" , "good health is the answer" , "Sir, opt for a toast" , "Good health!; tripos (anagram)" , "... [good-health]" .)