Zazen while sleep deprived

[Meian]

. Allso I was aware of my posture because if you relax the spine too much, sleep takes control of you.
Gassho,

Kyonin
#SatToday

Sleep takes over when the spine is too relaxed?????

I think you have resolved a persistent problem I've had for months when studying and writing assignments

Gassho
Kim
#sattoday