Hrm. I only do planks for 60 seconds at a time, but with reps. This is mostly because I do them on a mat and my arms get sweaty and slide gently off the mat over time. Facepalm.
@bothwell started
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Hrm. I only do planks for 60 seconds at a time, but with reps. This is mostly because I do them on a mat and my arms get sweaty and slide gently off the mat over time. Facepalm.