The definition of a crunch is a sit-up type of abdominal exercise where the torso is only lifted slightly off the floor . An example of a crunch is a common ab flattening exercise done in Pilates.
The definition of a crunch is a sit-up type of abdominal exercise where the torso is only lifted slightly off the floor . An example of a crunch is a common ab flattening exercise done in Pilates.