A small observation: In ancient times much importance was given to the place where Yoga (asanas, pranayama, meditation, etc.) was practiced. The following places were suggested:
– the forest – the fields – the mountains – by the river side – in the temples – Or anywhere where AGNIHOTRA is done to ensure that the atmosphere was sufficiently fit and pure to receive the benefits from these disciplines.
Today it is very difficult to escape air pollution. Even the penguins at the poles cannot escape, since the toxic gases expand around the globe. However, wherever Agnihotra is practiced, toxicity is neutralized and it is an ideal place for the practice of Yoga.