[Closed] How long can you plank for?

Wall plank onto a medicine ball. Ouch

Just managed three minutes - at 2.30, I was trembling like a priest in a catholic boys school, at 3 minutes I was shaking like a shitting dog.

Go on then, someone please tell me what "planking" is???? I don't suspect I can do it, or may not even want to, but I'd really like to know what it is.

My 10 yr old does the plank and side plank as part of his core strength building exercises for his tennis. 2min's front and 1 min each side. That's so it doesn't strain him to much!

Lady Gresley - this is the standard (looks easy doesn't it?). Google plank exercises > images for other variants.

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Hmmm, just as I thought, at my age that's not something I want to do!