Yoga for menstrual cramps?

I myself do not practice these poses, simply because I am so relieved to be off my pms,and into periods,that I am really feeling very relieved, the pain and gore notwithstanding:)

But for those fussy women, who need some relief,here are the ones:

• Lying butterfly /lying leg locked pose
• Seated butterfly
• Cat stretch
• Garland pose 

to name a few..