From Frugivore — Sit-ups: They’re the one exercise everyone has tried. Mostly because we can’t help it. Even as a baby it was one of the first things we learned – right after how to spit-up. Want to get out of bed in the morning? We sit up.

But these days sit-ups have gone from blasé to being a raging topic of debate in the fitness world. They’re either the yellow brick road to brick-hard abs or they’re evil incarnate and not only are pointless (“you have to lose the fat first!!”), but may even be counterproductive by building – and I’m using the technical phrase here – pokey-outey muscles. Madonna and Gwyneth Paltrow are reportedly in the former camp, regularly clocking hundreds of abs, sans roller, a day.

Britney Spears once bragged of doing 1,000 sit-ups a day to stay in “Toxic” snake-dancing form. In the other camp you have Angie Harmon, who boasts of never intentionally sitting up unless she has an actual reason to do so, such as getting out of bed for a bikini shoot. Right along with her is Abtastic Spice Geri Haliwell, who says her Bond girl stomach comes from eschewing abs and sticking with dog walking and yoga. I’ve yet to hear anyone, celeb or otherwise, say, “Sit-ups? Meh. I do a few here and there. They’re all right.”

Regardless of on which side of the ab spectrum you fall, there is a serious side effect to sit-ups that you should know about. (If I worked for Self or Vogue right now, I’d be all “The Disastrous Exercise You ARE Doing That May Be RUINING YOUR HEALTH! Search madly for our non-existent table of contents to find this article before the grocery checker gets to your order or you WILL DIE!” Ahem.) Two friends, who shall remain nameless for reasons soon to become apparent, both came down with the same, um, medical condition. And they both got it from doing sit-ups.

Problems of the Butt

The official term is “posterior ulcer.” I call it blistered badonkadonk. Basically it happens when you do sit-ups in such a way as to rub all the skin off your tail bone. As painful as a carpet burn and as embarrassing as a bed sore, these ulcers can take months to heal fully. Knock on Formica, I’ve never had this issue, but it is hard to ignore when two super-fit girls in my life both did this to themselves in the same week.

(Continue Reading @ Frugivore…)

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