Ultimately, due process a bit problematic — much huffing and puffing on the bench? (4)
'much huffing and puffing on the bench?' is the definition.
(type of aerobics done with a block or bench)
'ultimately due process a bit problematic' is the wordplay.
'ultimately' indicates one should take the final letters.
'problematic' is an anagram indicator.
The last letter of 'due' is 'e'.
'e'+'process'+'a'+'bit'='eprocessabit'
'eprocessabit' with letters rearranged gives 'STEP AEROBICS'.
'ultimately due process' is the definition.
'step' can be an answer for 'process' (thesaurus). I am not certain of the 'ultimately due' bit.
'a bit problematic much huffing and puffing on the bench?' is the wordplay.
I cannot quite understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
The remaining letters 'sep' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for step that I've seen before include "Movement in dancing" , "Pace (taken one at a time?)" , "Tread - stage" , "Gradation" , "bit of a dance" .)