If you can already do a basic abdominal plank for 30 seconds, challenge yourself beyond the basic plank instead of boring yourself with redundant exercises; spend that valuable (and limited) training time doing more advanced plank variations like the Performance U 3-2-1 abdominal plank, which combines a one-arm planks with a long-lever elbows plank: each held for 10 seconds each, two times through, totaling one-minute.
2014-02-03
3-2-1 Plank (Exercise of the Week #4)
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