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A new survey found the top types of exercise that people avoid doing in public, and crunches are #1, with 46% of people not wanting others to see them doing it.
The rest of the top five are: Sit-ups . . . squats . . . push-ups . . . and lunges.
There's no reasoning . . . but it's possible that crunches, sit-ups, and push-ups are intimidating because we don't think we can do very many. And maybe we are timid about squats and lunges because they kind of "push out" our butts and crotches?