the theory behind the wheel is quite good for the simple fact of the pre-stretch
it works the abs a ton if you can pre-stretch them out first.............
sor for crunches...... you could put 8-10 inches of padding under your lowerback and do regular crunches.
weighted crunches are extremely effective as well............
the only problem i have with leg raises is that most people dont do them properly and they work thier hip flexors more then there abbs............. maybe Belial can describe them more accurate....i dont do them i suck at them so i dont do them much.....usually at the end of my workout
it works the abs a ton if you can pre-stretch them out first.............
sor for crunches...... you could put 8-10 inches of padding under your lowerback and do regular crunches.
weighted crunches are extremely effective as well............
the only problem i have with leg raises is that most people dont do them properly and they work thier hip flexors more then there abbs............. maybe Belial can describe them more accurate....i dont do them i suck at them so i dont do them much.....usually at the end of my workout