September 3, 2018August 29, 2025 Michael McIsaac, MS, MS, CSCS 0 Comments Anti-Extension - Option 1 30 views You may also like 00:23 1. Level 1 McGill Crunch (Front View) 36 views Anti-Extension - Option 1 00:26 2. Level 2 McGill Crunch (Side View) 35 views Anti-Extension - Option 1
