One of the first exercises I did when I started CrossFit was this move called an AbMat sit-up, named after the mat you place under your lower back for support. I couldn't believe how sore I was for ...
Four minutes of wall ball sit-ups. That was at the end of a recent CrossFit workout I took, and I was floored by how much this exercise worked my arms — they got sore faster than my abs! Jade Jenny, ...
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