Exhausted after cycling, leaving nothing out (2,3)

I believe the answer is:

in all

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

'leaving nothing out' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for in all that I've seen before include "after considering everything" , "without exception" , "Taken together" , "In total" , "With everything counted" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.