Once you start to have longer periods of stable attention, you will face the problem of drowsiness and falling asleep. Why does dullness arise right when our concentration starts to improve? The first reason is that when we meditate, we intentionally turn the mind inward. But we’ve been conditioned our entire life to associate turning inward with going to sleep. The second is that as we succeed in taming the mind and calming its normal state of relative agitation, the overall energy level drops.
