To most tennis fans, it's a bit of a mystery what goes into a top-level player's match-day preparations.

But Marin Cilic gave fans a view of a day in the life on the pro tour with his vlog from Cincinnati, which gives insight into his routine on the practice court, in the gym and even with his post-match ice bath.

The bicycle, treadmill and stretches, as Cilic demonstrates, are all crucial parts of the world No. 7's pre-match routine.

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After the match, Cilic finishes with an uncomfortable ice bath—"10 Celsius, maybe 8. It's cold," he says.

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A champion in Cincinnati in 2016, Cilic is looking to set himself up for another deep run at the US Open, where he won his only Grand Slam crown, in 2014.

The Croat is through to the semifinals in Cincinnati.