Holding a plank for an extended period of time can be quite the challenge. However, Josef Sálek took up the challenge to break the current world record for the longest plank, which is 9 hours, 30 minutes, and one second.
Holding a plank for an extended period of time can be quite the challenge. However, Josef Sálek took up the challenge to break the current world record for the longest plank, which is 9 hours, 30 minutes, and one second.