Ab Crunch Workout [ How-To ] [ One Set ] by #DAREBEE (opens in new tab)

The name is not subtle, and neither is the workout\. Five crunch variations hit the abdominal wall from every useful angle, cycling through standard crunches, cross crunches, knee crunches, and reverse crunches in a sequence that leaves no part of the core unaccounted for\. Standard crunches load the upper rectus abdominis directly\. Cross crunches pull the obliques into the effort by rotating the torso toward the opposite knee, building the diagonal strength that supports rotation and latera...