The explanation about mudras has ben given at the page Seven Mudras. Other Mudras and their benefits are listed as below:
1. Ling Mudra
Interlock the fingers as shown in the picture and keep the thumb of the left hand upright.
Benefits:
Precaution:
2. Dharan Shakti Mudra
This mudra enables us to retain our breath in the lungs for a longer time. When you do puraka (inhaling), then press the first part (upper most portion) of the thumb with the tip of the index finger. This helps in performing internal kumbhaka for a longer time. If you press the middle portion of the thumb then kumbhaka can be done for still longer time. In case the root of the thumb (part-3) is similarly pressed then kumbhaka can be done for a very long time, easily.
Benefits:
More prana vayu is available by retaining the breath in the lungs for a longer time, blood and body will become stronger and the total amount of air breathed in and exhaled during the whole day can be reduced to a large extent, which increases longevity.
3. Surya Mudra
Keep the tip of the ring finger at the root of the thumb and press it with the thumb.
Benefits:
This mudra balances the body, reduces weight and obesity and increases heat in the body, which helps in proper digestion. It reduces stress, enhancement in body strength, and reduction of cholesterol content in the blood. Practicing this mudra cures diabetes and liver problems.
Caution:
This mudra should not be performed by a weak person. Do not perform it for longer periods during summer time.
4. Apan Vayu Mudra
Performing Apana mudra and Vayu Mudra together is known as Apana-vayu mudra. The little finger remains straight.
Benefits:
It cures heart and Vata-dosa related problems and makes the body healthier. Those who are suffering from a weak heart should practice it daily. In the event of a heart attack, performing this mudra gives relief. It releases any gas accumulated in the stomach. It is beneficial in headache, asthma and high blood pressure. Performing this mudra 5-7 minutes before climbing up the stairs provides comfort.