But when I looked at him again he was perfectly normal and looking at the watch. At the end of an hour it was obvious nothing had happened. His reactions had been a total put-on. But yogis have lost that knowledge. They were used with fasting.
Nobody knows now.
To take them with no effect, your mind must be firmly fixed on God. Others would would be afraid to take. Many saints would not take this. And he left it at that. If you are in a place that is cool and peaceful, and you are alone and your mind is turned toward God, then you may take the yogi medicine.