The hanging leg raise is commonly performed for lower abs
workouts but unfortunately it is one of the exercises which is commonly
performed incorrectly in gyms across the world. The improper way to perform the
hanging raise is solely raising the knees up in a marching motion which is
really only targeting the hip flexors and not the abdominals. The correct way to
perform the exercise is to do a reverse abdominal crunch in which you contract
your abdominals.
Hanging leg raises are primarily performed on 3 different pieces of
equipment. The most common piece of equipment to perform hanging leg raise
on is the Capitan's chair which lets you hang via your forearms and provides
back support. The other 2 ways to perform them are hanging from a pull-up
bar by either holding on to the bar or using a form of ab straps.