Leg scissors are used for people that really want to target the lower
abdominals. Since working the lower abdominals is always tricky due to the
fact that most of the time, the hip flexors are also doing a lot of the work
it is essential that this exercise is felt in the lower abdominals. The
unstable surface of the BOSU increases the difficulty of this exercise due
to its instability as well as increasing the amount of body mass lifted
which forces the exerciser to lift more resistance (weight of the legs).
