A robust 12 set of sun salutations can burn dullness. Also, you can add in your daily yoga routine warrior poses. Holding these two poses every day for a period of time builds strength, character and courage. Both poses mentioned below reduce and balance kapha dosha.
Warrior I (Virabhadrasana I)
From Mountain Pose, step your left foot back and place it at about 45 degrees with the heel down. Keep the right toes pointed forward. Inhale to lengthen the sides of the body and exhale to bend the right leg. Make sure your right knee is directly in line with your right ankle. You may place the hands at the hips or, on an inhalation, extend the arms overhead. Palms face one another, and the arms run alongside the ears. Repeat on the other side.
Lift and open the chest while gazing upward. If it is comfortable for your neck, tilt the head slightly back to open the throat. When you feel ready to release the pose, hold it for one more breath.
Warrior II (Virabhadrasana II)
From Warrior I with right leg forward, exhale as you open the upper body to the left, lengthening the arms from the shoulders. Palms face down, and the right knee is directly in line with your right ankle. Feel the line of energy running from the tips of the fingers on the left hand to the tips of the fingers on the right hand. Repeat on the other side.
Lifting and opening the chest. Gaze upward. Hold the pose one breath longer than you think you can.