Paschimottanasana or the Forward Bend in sitting posture benefits the health of the abdominal organs. It also stimulates the digestive system and relieves constipation. This asana is an ideal exercise for the obese. 

How to do Paschimottanasana?

• Sit erect. Stretch your legs out in front of you.
• Inhale. Stretch your arms up over your head.
• Exhale. Bend your torso forward from the waist.
• Lower your outstretched arms simultaneously, and grasp your toes. 
• Bend further to close the gap between your chest and your thighs.
• Try to let your forehead rest on your legs.
• Maintain the posture for about 30 seconds to one minute while breathing evenly.
• Inhale. Lift your torso and raise your arms over your head. Relax your arms and bring them down.