sir, i have done many classes of yoga but what i n

Sat Nam,

I am giving you the information I have about PE

http://s3cr3ty0stg2.wpengine.com/newsletter/09-2009/yoga-food-sex.html

http://s3cr3ty0stg2.wpengine.com/newsletter/09-2009/yoga-food-men.html

The Yoga postures recommended for premature ejaculation are

http://s3cr3ty0stg2.wpengine.com/hatha-yoga/shoulder-stand.html

http://s3cr3ty0stg2.wpengine.com/hatha-yoga/bow-dhanurasana.html
http://s3cr3ty0stg2.wpengine.com/hatha-yoga/plow-halasana.html

Also buterfly and peacock: http://s3cr3ty0stg2.wpengine.com/kundalini/poses-on-the-floor.html

Cobra:

http://s3cr3ty0stg2.wpengine.com/hatha-yoga/cobra-bhujangasana.html

PASCHIMOTTANASANA (Back Stretching Posture)

http://s3cr3ty0stg2.wpengine.com/Ashtanga/Ashtanga-PASCHIMOTTANASANA-A.html

Regular practice brings perceptible changes within few months.

Also ayurvedic medicine might help with this matter. Something like Aswagandha  have very good reputation for strenghtening the male functions.

Blessings