Tagged With planks

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Dear readers, I'm sorry. When I asked Lifehacker staffers what's been missing from our fitness challenges, the resounding answer was that we all need to spend a month working on our plank game.

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When you were a kid, you probably did sit-ups at school for an ab workout. But is the sit-up the best ab exercise? That's actually a simple question. No way! There are far better ab exercises than a simple sit-up, which can exacerbate back problems and only focuses on one small area of the abdominals.