Maybe Ivy excited to avoid constant exercise (6,2)
I believe the answer is:
limber up
'exercise' is the definition.
(I know this)
'maybe ivy excited to avoid constant' is the wordplay.
I cannot quite see how this works, but
'maybe' could be 'i' (I've seen this in other clues) and 'i' is present in the answer.
'excited' could be 'up' and 'up' is found in the answer.
'constant' could be 'e' (mathematics: 2.71) and 'e' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for limber up that I've seen before include "Get ready for exercise" , "Exercise gently prior to much greater exertion" , "Train" , "Exercise gently before strenuous activity" .)