Now, a travel doctor has revealed the surprising reason why you should never chew gum on a flight, despite the fact many passengers believe it to help stop your ears popping as you gain altitude.they explained that chewing gum can increase the amount of gas in your stomach, which in turn makes you bloat - and in turn contribute to that sluggish plane feeling."Forget about chewing gum to stop your ears hurting at take-off or landing.
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