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This happens when you do 100 sit-ups everyday
Doing 100 sit-ups every day sounds simple - but the results go deeper than sore abs. This video breaks down how daily sit-ups ...
Here's the exercise to add to your routine ...
One out-of-shape writer vows to transform his body (and mental health) with an accessible but effective fitness challenge. About a month ago, I looked in the mirror and was forced to do a double-take.
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