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It's Wednesday, June 8th, 2022. I'm Jackson Bird today. Has the sit-up been cancelled?

Plus, the century-long history of growing non-native plants in Antarctica, and how it will help astronauts fill their bellies when they fly to the moon and beyond.

And why mice are afraid of bananas?

Here's some cool stuff for your ride home.

Do you remember being forced to do countless sit-ups in gym class as a kid?

If you're of the right age, you may remember when sit-up requirements turned into crunches.

And if you're young enough, maybe you saw the disillusion of those requirements altogether,

replaced with something else, like perhaps holding a plank.

Despite how many personal trainer influencers you might still see recommending crunches and sit-ups of all sorts online,

there has been a quiet but marked turn away from sit-ups over the last decade.

According to a recent piece in the Atlantic, every branch of the U.S. military has started to phase out sit-ups and crunches from their entrance tests and training regimens, or at least made them optional.

The Presidential Youth Fitness Program, which in 2012 replaced the presidential fitness test that almost every American listening was subjected to as a child, now recommends curl-ups instead of sit-ups,

a kind of subtle core exercise.

So what's happening?

Why have experts and long-running institutions

...