At this moment I am working on my straddle planche.
I've noticed that when performing it I've got those 2 problems:
I am unable to fully straighten my legs ( lack of hamstring flexibility? )
while squeezing my glutes I feel some kind of stress (almost as if it were a cramp) in my hips area [only in the straddle position]
I've made some research and I have found that they are most likely problems related to flexibility.
Are there some exercise/some streches for improving my straddle position? (especially for the planche if possible)