All asans are not necessary for overall improvement of health. Moreover after a certain age, because of non-malleability of the muscles and joints, most of the asans cannot be practiced. But five or six asans are sufficient for overall improvement of health. In general I would suggest padmasan, sarbangasan + matsyasan, bazrasan, halasan, sarpasan (bhujangasan), gomukhasan, pabanmuktasan and janusirasan. These are very simple asans and there are competent teachers in every gym in India. Add to these simple pranayams. Ramdeva (notwi.
