IBS broadly indicates that the digestive system has gone berserk. Ayurveda gives a better understanding of Irritable Bowel Syndrome by addressing the cause, and reveals measures to heal.
Dandasana and Paripurna Naava-asana improve strength and flexibilty in body, while calming the mind. They also strengthen the back, abdomen and kidneys in particular, and legs. Flab around the waist is also allowed to leave the body. Dandasana is a familiar sitting position, and one of the simplest yoasanas.
Uttanasana is a relaxing, if slightly challenging yogasana for a beginner. This mobilizes the lower limbs, improves working of the kidneys, decreases pain in menstrual cramps, and reduces overall stress in body and mind. This asana rejuvenates the spine in totality. It improves flexibility, and promotes mental calm. Not recommended for those with spinal injury, though.