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What is an up-down plank, and what are the benefits?
As a reminder what works for me might not be right for you and your body.
You get a lot of bang for your buck with this move, and I really felt it.
Both are signs that your core isnt engaged, meaning its not working during the exercise.
My results?
However, this challenge really helped boost my confidence, and work on my technique.
Next up, burpees, I guess?
