Bhujangasana or the cobra pose is an effective pose for both men and women. The asana helps make you more flexible relieves back pain and cervical pain. Apart from that this asana is also very effective in helping a man last longer in bed and relieves any complaints of premature ejaculation. Steps to do this asana: Lie flat on the floor on your stomach. Place your forehead on the floor and your feet flat on the ground. Make sure your feet and heels are slightly touching each other. Place your hands with your palms facing downwards right next to your