Crossword Genius

What heavy drinker does to exercise (4)

Ross

I believe the answer is:

tope

I'm a little stuck... Click here to teach me more about this clue!

'what heavy drinker' is the definition.
I can't judge whether this definition defines the answer.

'to exercise' is the wordplay.
'exercise' becomes 'pe' (Physical Education).
'to'+'pe'='TOPE'

'does' is the link.

Can you help me to learn more?

(Other definitions for tope that I've seen before include "plantation?" , "Drink excessively like poet" , "Drink a lot like poet" , "What habitual drinkers do" , "Drink heavily" .)

I've seen this clue in The Telegraph and The Sun.
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