Get healthy tension when narrowly ahead (4,2)
I believe the answer is:
tone up
'get' is the definition.
The definition and answer can be both related to bodily activities as well as being verbs in their base form.
Perhaps you can see a link between them that I don't see?
'healthy tension when narrowly ahead' is the wordplay.
I cannot quite understand how this works, but
'tension' could be 'tone' (tone is a kind of tension) and 'tone' is located in the answer.
'ahead' could be 'up' (similar in meaning) and 'up' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for tone up that I've seen is " Make healthier".)