5 Hz sits at the low end of the theta brainwave band — the range associated with meditation, creativity, deep relaxation, and the hypnagogic state between waking and sleeping. Theta waves are classed as "slow" brain activity, connected to intuition, daydreaming, and the processing of memories and emotions.

Research has shown that auditory stimulation at 5 Hz over extended periods can generate a coupling of brain activity that increases the capacity of immediate verbal memory. This suggests that theta entrainment may support not just relaxation but also certain types of learning and information retention.

The binaural beat here uses a 170 Hz carrier — your left ear hears 167.5 Hz, your right ear hears 172.5 Hz, and your brain perceives the 5 Hz theta rhythm between them. This is an excellent frequency for meditation, creative visualisation, or winding down after a mentally demanding day.