Day 4 of 21 SGPT Plank Challenge

Today is Day 4 of 21 for the SGPT plank challenge.

Do plank on hands for 50 seconds. Tomorrow we will add 10 seconds.

If you cannot do the amount of time listed – then go as long as you can and mark down your time (example 12 seconds).

Elite athletes can add a weight vest.

Post up your time for plank in the comments below.

Any questions? Post up below in comments

SGPT Plank Challenge Day 5 of 21

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