The solar plexus chakra corresponds with the energy of personal power. It governs willpower, well-being and achievement; hence, in yogic teaching, it is believed to radiate positive energy to the lower chakras as well as feelings of love up to the heart chakra. Some yogic teachers believe that positive, loving energy actually originates in the solar plexus chakra then is felt and experienced in the heart chakra.
A balanced solar plexus chakra promotes feelings of intrinsic motivation and self-confidence. It is the center for transformation and positive change. If it is out of balance, it may cause problems physically with digestion and diabetes, and emotionally with feelings of nervousness. Eating disorders are also associated with imbalances in this chakra.
There are certain yoga asana that are believed to help activate the solar plexus chakra. These are typically asana that engage core strength or twist the abdomen. Kriyas, or cleansing practices, are also said to stimulate the solar plexus chakra.