05 Loving-kindness for oneself and others and Q&A

In this session we continue with the practice of loving-kindness, beginning with ourselves and then gradually extending outwards where it's easiest The meditation starts at 4:39 QA starts at 29:24: 1. When doing the loving-kindness practice and it becomes strenuous, can one switch to shamatha for a bit instead? 2. When we invite images, are we supposed to do it like open a room and invite everyone and extend the wish, but at the same time just rest with it? 3. Can you explain the objects of attention while settling the body, speech and mind in their natural state? 4. Using a mental image as the object of attention instead of the sensations of the breath