When you say “overnight,” are you meaning “looping then continuously overnight?” Yeah, that’s never a wise idea for any field, especially when we have no direct experience of the field’s effect on us personally.
(For the record, looping BoL continuously overnight [through negligence] did not melt my brain. Could mean my brain is made of rock; that’s been suggested at various points in my life )
But yeah, it’s been said a number of times in its thread to go low and slow with BoL, regardless of you’re sleeping or not. That’s why it’s important (or at least helpful) for all of us to read the threads for the fields we’re interested in. (Thinking of _Om’s Master Skill thread.)
@kimchisauerkraut, I don’t know if it’s one of your fields, but Plasma Light has been reported (even by me) to have interfered with forum friends’ sleep, at first. And that’s another point: our experiences with our fields change as we become more attuned with a field. Where a field might have been problematic for us at first, we acclimate to it.
Oh, yeah, the original SLR (with the William Tell Overture) has been known to wake people up due to its sudden increased volume. That’s why a quieter second version was made (on Patreon?).