The most common and most likely answer to this crossword clue is the 9 letter word OVERTRAIN
I've seen this crossword clue in The Times
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More clues leading to the result OVERTRAIN
- Waste education on evident shower?
- Exercise too much in public, then shower?
- Work out too much in public, then shower
- Beginning of operation on very difficult terrain, exercise too much
- Plain wet to practise excessively
- Exercise too much? It’s evident — need shower
- Prepare too hard for open rule, by the sound of it
- Excessively coach about connected wagons
- Frank comes to fall practice a lot
- It’s obvious what cricketers don’t want — to risk injury in nets?
Buddy explains!

The straight part
We know that "Waste education on" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case waste education on = overtrain.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OVERTRAIN mean?
OVERTRAIN verb- To train too much or too long.