The 30 Day Abs Challenge Quotes

“Please review “How To Properly Set Up Your Plank (Hands).” Once you are properly set up, drive your knee towards your chest and tap your knee with the opposite hand.  With full control, return back to starting position.  Alternate every single rep until the desired reps are completed.  For a split moment, you are effectively balancing on only one hand and one foot, causing your core to engage.  The objective is to control your core during the entire movement.”
― Arnel Ricafranca, The 30 Day Abs Challenge