Sydney, Australia - Trust her, she knows! Podcaster and dating expert Jana Hocking shares one simple trick a man can do before a first date that's guaranteed to get any woman "all hot under the collar."

And it's so simple!

The 34-year-old "has been on a jolly many dates" herself and one thing that stuck out at every single one of them was that the first five minutes are crucial.

As the blonde writes on News.com.au, at the slightest hint of greasy hair or an unpleasant smell, she's already looking for the nearest exit. If a man doesn't care about his appearance on a first date, he's either lazy or not very interested in her – so why waste your time?

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Especially since it's really not that hard! Hocking remembers a last-minute date she went on recently, where she and the man had just over 30 minutes to get ready. To her surprise, he managed to show up "freshly shaven, neat hair, wearing a nice collared shirt and smelt heavenly." What a lovely start!

Speaking of smell, the way to a woman's heart is through her nose! At least that's what the podcaster says. And she's not the only one! A study from 2005 found out that the most common dating deal-breaker was "bad hygiene."

Hocking has another example in store that had no happy ending. She once was on a date with a gorgeous man who had incredibly unpleasant breath. This literally prevented her from getting any closer. "That dashed any hope of a clumsy, awkward but exciting first kiss."

She ends her column with six hygiene/outfit tips that every guy on the planet needs to keep in mind when dating a woman:

1. Brush your teeth.

2. Wash and style your hair.

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3. Apply deodorant.

4. Put some effort into your outfit.

5. Wear perfume/cologne.

6. Wear nice shoes.

That's it! So simple, yet so effective.

However, there's so much more to keep in mind when dating. There are other big mistakes a man can make, including one which Hocking says is a deal-breaker for most women.