Regarding other yoga exercises, if you take Krishna prasadam you shall keep your body automatically fit for working, so there is no need of extra exercises which are required by persons who may eat more than what is required. So for prosecuting Krishna Consciousness one should not eat more than what is needed. One should not endeavor beyond his capacity. One should not talk unnecessarily. One should not stick with some extra regulative principles, nor should one associate with persons who are not in Krishna Consciousness. One should not be too much greedy. What one should do is chant the Holy Name of the Lord with faith, enthusiasm, and firm conviction on the statement of Lord Caitanya that simply by chanting the Maha Mantra one can be gradually elevated to the highest platform of spiritual perfection. Also what is important is to follow the four regulative principles of avoiding all illicit sexual connections, meat-eating, intoxication and gambling. I am sure that Rupanuga will ably guide you in these matters.
Try to help in our Krishna Consciousness activities, and whenever you feel the necessity of my help you are welcome to address me in letter. Read Bhagavad-gita As It Is very carefully, and we are going to hold an examination next year in January upon this book. I hope that you will be enough expert in this Krishna Consciousness science to pass the examination and be awarded with the title of "Bhakti-sastri", one who knows the principles of devotional service. So think over these matters discussed herein very carefully, and Krishna will help you in all respects. I hope this meets you in good health.