How long do I have to do plank once?



plank

How long do I have to do plank once?

It's hard to hold out for 30 seconds once you do it


684 2017-09-18 Lady

A. 1

It's always like that at first
If you keep doing it, you'll get better


Lady 8 years ago 0

A. 2

If you do five sets a day, you can continue to increase the time. Fighting!


Lady 8 years ago 0


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