5 Best Exercise Balls - Nov. 2021 - BestReviews
Exercise balls are measured in centimeters, with each size increasing by 10 cm. A 45-cm exercise ball is best for someone 5'0' and under. A 55-cm ball is best for someone between 5'1' and 5'7'. A 65-cm ball is best for someone between 5'8' and 6'1'. A 75-cm ball is best for someone between 6'2' and 6'6'.
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