Genius creates scientific formula for packing undies

Packing for a trip away is a massive gamble. You either end up with enough gear to survive an Antarctic winter, or are forced to wear the same undies more times than you’d like to admit – there's no in between.

Not for straight-up genius (or wizard, jury’s still out) Karina Judd, who took to a popular closed Facebook group, Meme Queens, to share an insane travel hack, where she claims to have cracked the scientific and mathematical formula for the perfect amount of knickers to bring with you on holidays.

It all kicked off when one member of the group posted this meme.

Karina then proceeded to share her unique (but low-key high-key incredible) travel hack.

And if that weren’t enough, the undie expert took it a step further, creating an online spreadsheet which does all the math for you. All you’ve got to do is fill in details like how many days you’ll be away, any stomach issues you may have, the heaviness of your period, the weather forecast of where you’re staying, whether you're pregnant and (naturally) your willingness to do laundry.

So when you’re packing for your next trip, don’t leave it up to luck; enlist the help of the Karina Method and use her spreadsheet.