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An electromyographical evaluation of the validity of the 2-minute...

zebing rated 8 months ago
Ultra nerdy study showing that situps rely heavily on the hip flexors which can be dangerous for the back. Skip to page 4 for the conclusion.

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zebing rated 8 months ago
Ultra nerdy study showing that situps rely heavily on the hip flexors which can be dangerous for the back. Skip to page 4 for the conclusion.

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