167. CRUNCHES - DON T LOCK THE FEET Another mistake many bodybuilders make wi'en performing crunches is to lock their feet. The primary culprits for this are abdominal boards with rollers. Locking the feet will place excessive stress on the lower back as you crunch forward, in addition to working the hip flexors excessively.
Thursday, January 23, 2014
CRUNCHES DONT LOCK THE FEET
Label: Beginning Exercises
Diposting oleh Body Building Archive di 11:39 PM
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