There are some really nicely crafted lines here Maddy..I really loved:

"I shake my mind, loosen the grit"

You're finding natrual rythm in words (the above is four perfectly formed little iambic feet - de DUM de DUM de DUM de DUM)

And this:

"dance against the breaking blue sky"

you could use:
dance against the break blue sky - just dropping the ing makes it scan better, see left, and maybe gives a sense of the sea.. (which would be the opposite stress to the above, TEE tum TEE tum TEE tum TEE... notice the last part of this foot is missing? That's fine, it's just an unstressed ending - but this is the opposite way round to your above line (iambic) whereas this one is trochaic or a trochee foot, where the stress is reversed.
You can focus on writing in purley one of these meters - or mix them interestingly like you have in this little gem, love it!

Check out this for the difference between your two meters present here in your piece:
http://www.tnellen.com/cybereng/forms.html

This is an interesting shift from the outset to the poem, till it's conclusion with "chucked a sickie" which is kind of an Australianism - we use the same term for a "skive day"

Good for you, I hope it was worth it.

Thanks, and keep writing.

Chris.

He's pretty much said it all, yes a spry wee poem.
I do have a little niggle with that last line (you'll get used to this, I'm a niggly old bastard, it's my job).
To me it feels just a tad disingenuous, like look at me, I'm naughty. Perhaps it's supposed to, perhaps it's a Brit thing, perhaps I've got a slacker work ethic [grins].

In the fourth verse are you describing bracken? I like your gorgeous blue sky day. As a fellow Brit I understand that naughty feeling at the end. By the way, normally I would be a bit picky about the use of haze and hazed out but it works for me. I also like the way you start, trundling a tired body. Nothing is perfect but this is close enough for me to not feel inclined to nit pick.