This is the Lords of Light.

You are asking about when someone is asleep when you are sending the Energy.

This is a strange one, because technically the Energy has reached them, whether they were aware or not. During the time before the Initiation people can and do pick up Energies, so whether they are actually awake at the time of the Transference is not so important. What is important is the way the whole process is viewed by the recipient.

If they tell you they missed it, then it is good to send the Energy again – otherwise there is always that doubt!

With the sickness feeling, it is the Energy being too Powerful for the people concerned to process – exactly as you said. It passes soon and causes no lasting harm. You can’t really predict this, or particularly do anything about it. It simply gives an indication that the Initiates have things they need to deal with – they may wish to address this with their Teacher.