The fish pose or matsyasana is similar to dhanurasana and is a great way to beat fatigue menstrual pain anxiety etc. But the best part about this pose is that it gives you that natural glow. It also stretches out the muscles of the back neck chest and legs giving you instant relief from muscle aches and pains associated with menstruation. This pose helps stimulate the organs of the stomach and abdomen fighting indigestion gas and that feeling of bloating. Steps to do this asana: Lie flat on the floor with your knees bent and your feet flat on the floor.