Why are millennials so fat?

I look at pictures of young Gen-X from the 1990s and 2000s and I cannot help but marvel at their beauty back when they were in their prime.

Fast forward to 2020, I see so many millennials with bulging bellies and pudgy faces that I wish I could go back to the past. It's so difficult for my generation, seeing that beautiful or even average men and women are becoming the minority.

What is it about millennials that makes them so chunky, compared to the thinner and more athletic Gen-X?
Why are millennials so fat?
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