But, you may be giving potential employers a bad impression before you even open your mouth.
Careerbuilder.com found that employers form an opinion of you in the first ten minutes of a job interview.

So put your best foot forward and consider these body language tips.

Body language experts suggest starting off strong.   
That includes a good firm handshake, and an appropriate greeting like, "it's nice to meet you".
And don't forget to make eye contact.

Interviews can make people nervous.
If that's the case for you, be aware of your energy and remember not to fidget.

And there's always the question of what to do with your hands.
Careerbuilder.com found that it's best to keep your hands open and relaxed on the table.
Experts say clasping your hands or crossing your arms over your chest communicate that you're closed off.

And is it okay to cross your legs in an interview?
Body language experts say no.
They say if you're constantly crossing and recrossing your legs it can be a distraction.

 And while we're talking about extremities, what about finger gestures?
Steepling your hands can come across as arrogant and pointing your fingers can be seen as aggressive.

Overall, just pull your shoulders back, sit up straight and look them in the eye.
Good posture can take you far in the business world.