What is mounam is only silence of the mind, when the Heart
will speak to us. It is not silence in words and actions. Vratham
is something like a penance. As silentgreen correctly said, the
Vratham like not watching TV, not going for movies, fasting without
food for one day or one session -- are all some penances, and will
confer Chidda suddhi. It is only an effort to arrive at the silence
of the mind, the true silennce of the immortals.