Shravan Maas falls on the fifth month of the Hindu calendar, starting mid July and ending by the mid week of August. The star 'Shravan' rules the sky during Purnima (full moon day), or during the entire of the month, hence the month is known as Shravan Month or Maas. This month is considered to be the holiest month of the year as many religious festivals and ceremonies fall in this month such that almost every day in the month is considered prosperous.
The legend of Shravan Month is that the Samudra Manthan or churning of oceans took place in this month. During the churning, the Halahal (poison) that came out, and was consumed by Lord Shiva which he stored it in his throat subsequently turning his throat blue, and hence Shiva is attributed to the name Neelkantha (meaning blue throat). To reduce the poison's impact, Lord Shiva wore the crescent moon on his head. To lessen the effect of the poison the Gods and people started offering the water from the Holy Ganges to Lord Shiva
During the entire Shravan Maas period, devotees offer prayers, flowers and abhishekam to Lord Shiva to gain a long and prosperous life.
It is believed that the person who fasts on all Mondays of Shravan will have all their prayers answered by the Lord.
People chant the Shiva Mantra "Om Namah Shivaya" and Mahamrityunjaya Mantra. Devotees offer their prayers to Lord Shiva and then consume normal food.
Advantages of Fasting on the Somvar (Monday) in Shravan Maas:
Devotees are blessed with spiritual bliss Improving physical and mental health Increasing willpower and memory Women who fast on Shravan Mondays (Somvars) get their perfect partner Fasting removes obstacles by expelling negativity.
Things to Do during Shravan Maas:
Wear a Rudraksh and use a mala for Japa. Chant Maha Mrityunjaya Mantra. Offer to Lord Shiva Bhibhuti and also place some of it on your forehead. Keep a fast on Monday to please Lord Shiva. It is a belief that girls who fast on every Monday of Shravan gets a good spouse. Make offerings on the Shiva Ling that consist of Bel leaves, Panchamrut (milk, yoghurt, clarified butter, honey and jaggery). The general belief is that by offering milk to Lord Shiva in the month of Shravan one can earn a lot of punya or merit. Recite Shiv Chalisa and Aarti Source:Internet