KeilaniG said:Jefferson curls are exactly what the doctor order, apart from actually getting the motion down with active flexibility.
For me and a lot of other people it would seem that these only help with pike flexibility, not straddle. They have been fantastic for my hamstrings. But when I open my legs in straddle something else gets in the way and my compression is just a fraction of what it is with straight legs.
Has any one tried, successfully or unsuccessfully, doing jefferson curls in a wide leg straddle position?
I've also been experimenting with this stretch that Alex87 showed me, which seems like it might be useful:

Pushing my knees out and sitting back seems to create a stretch similar to what I feel when I try to compress in straddle.