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, ...
Are you ready? Are you pumped? Are you prepared to go all in? Good. Because this CrossFit workout is going to take all your physical and mental effort to push through. But it's totally worth it.
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