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The US Navy has replaced sit ups with forearm plank pose as a main exercise for building strong abs. Their "Navy Physical Readiness Tet" (PRT) requires that service members now have to pass now includes a one-minute forearm plank instead of a two-minute sit-up test. The reason for the change was reported in the magazine Yoga Journal where they noted: "Earlier this year, the Naval Health Research Center (NHRC) determined that forearm plank is a better test of core strength and abdominal muscle endurance. According to a memo published by the Navy Administration, the repeated spinal flexion movement of the 'curl-up' (also known as a 'sit-up') is not 'operationally relevant, may aggravate lower-back injuries, and does not appropriately challenge the abdominal musculature.' ”
Here's a photo of the pose. Challenge yourself and see if you can hold it for a full 60 seconds.
Here's a photo of the pose. Challenge yourself and see if you can hold it for a full 60 seconds.
Public domain photo from www.pexels.com
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