Hi Guys,
I have been slowly progressing with my Straddle Up -step 6 so far- but I still get really strong cramps in my lower back/upper butt during my last sets. Last time I did all sets of the exercise I had bad cramps in the lower back for the two following days.
Is there any stretch in particular that I could do to improve this? Should I just keep doing the exercise and it will get better over time?
Thanks,
Jeremy