A busy 59-year-old who can plank for 4 hours straight shared how she finds time to strengthen her core

A busy 59-year-old who can plank for 4 hours straight shared how she finds time to strengthen her core

DonnaJean Wilde

DonnaJean Wilde can plank for 4.5 hours. She built up to this over a decade, while juggling parenting, teaching, and studying for a master's degree.

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