What is the reason behind the Buddha's advice to lie down on the right side "in the lion's posture?" Why not on the left side for example?
"And how is a monk devoted to wakefulness? There is the case where a monk during the day, sitting & pacing back & forth, cleanses his mind of any qualities that would hold the mind in check. During the first watch of the night,1 sitting & pacing back & forth, he cleanses his mind of any qualities that would hold the mind in check. During the second watch of the night,2 reclining on his right side, he takes up the lion's posture, one foot placed on top of the other, mindful, alert, with his mind set on getting up [either as soon as he awakens or at a particular time]. During the last watch of the night,3 sitting & pacing back & forth, he cleanses his mind of any qualities that would hold the mind in check. This is how a monk is devoted to wakefulness. - AN 4.37
I am on the path, however not yet advanced. Any opinions or insights I share are meant entirely for discussion purposes and in cases where people might find them beneficial in whatever way. Since I am not advanced on the Path, I cannot guarantee that what I say will always necessarily be 100% true or in line with the Dhamma. However, having had an extremely interesting life with a wide variety of different (many of them deep) experiences, I hope that anything I share will be of use, provide food for thought, and inspire interesting and beneficial discussions.
Mettā to all!