*not Planck Time
How long can you hold the Plank? I'm thinking about doing it every morning before work, because I did it again yesterday evening with my trainer, and my abs are pretty F'ing sore today.
My personal best, so far, is 91s.
longest i ever got it was like 82 or 83, but i weighed a lot less and worked out more at the time, so i doubt i could get anywhere near this lately.