By practicing Pranayama,one can achieve concentration which is very essential in our daily life. For this sit in padmasan i.e cross legged and take your right thumb to close your right nostril. Then slowly draw in air through your left nostril. Now close your left nostril too with the ring finger of your right hand.try to hold on the air as far as you are comfortable.Then slowly you release or exhale this air out from the right nostril by remaving your thumb.Now, you repeat the same way with your left nostril .This way you make one Pranayam.For beginners, to start with ,you may try making two pranayams and then slowly you may increase it to four or five.By doing this regularly you can observe the change in you. Your whole body feels refreshed with your concentration power becoming more stronger and overallhealthy look.The results will be better if this can be practiced early in the morning after answering nature's call in empty stomach.In case you feel like having a cup of tea and biscuits, then you wait for another thirty minutes.Pranayam is the most simplest of all in yoga and can be done by all.