Clients can perform SPC correctly with minimal instruction.

Slow-paced contraction (SPC) is an indispensable HRV training exercise because it provides a direct, rhythmic means of engaging the autonomic nervous system through gentle, coordinated muscle activity.

If you record enough EEGs, you eventually meet the benzodiazepine (BZD) signature. The patient looks calm, the tracing looks faster than usual, and the familiar posterior alpha rhythm feels washed out. That impression is not a mirage.