According to Osho, after a deep meditation the unconscious retaliates: it resists the growing light of awareness, makes you slip back into sleep, take the master for granted, and behave unthinkingly. A compassionate shock from the master may be needed to wake you. Persisting in vigilance lets consciousness dissolve the unconscious, ending inner mortality and opening eternal life.
After a really deep calm, your old habits try to pull you back, so stay alert and accept wake-up nudges that keep you aware.