Lynsi Kaskubar

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Safe and Sound Protocol (SSP)

A Guided Listening Experience for Nervous System Regulation

Pricing & Program Options / SSP vs. RRP Comparison Chart

The Safe and Sound Protocol (SSP) is an evidence-based listening therapy that uses algorithmically filtered music to re-educate, regulate, and rebalance your nervous system, helping restore optimal health and wellness. Developed by Dr. Stephen Porges, creator of the Polyvagal Theory, this non-invasive acoustic vagal nerve stimulator is supported by over 30 years of research and has helped thousands of clients improve their daily lives.

Reported benefits have included:

Find a list of case studies by symptom here.

You may have noticed more conversations about “nervous system regulation” lately, and for good reason. Your nervous system influences nearly every process in your body, from heart rate and digestion to hormonal balance and immune function. It’s even considered a key indicator of overall health through heart rate variability. Supporting a dysregulated nervous system through the Safe and Sound Protocol (SSP) and other somatic (body-based) practices can be some of the most meaningful work you do for yourself.

Through neuroception, your body continuously scans your internal and external environments for cues of safety or danger and responds accordingly. It’s an intelligent system that constantly balances its assessment against what it perceives to be your capacity to handle those cues.

Over time, however, chronic stress can cause the nervous system to get stuck in survival mode, overestimating threat and losing flexibility. As this pattern deepens, symptoms often emerge. This may look like chronic pain, muscle bracing, “tired but wired” fatigue, digestive issues, migraines, restless sleep, slow recovery from exertion, or heightened sensitivities to sound, light, or smell, just to name a few.

These symptoms may seem unrelated but often share a common source: a nervous system struggling to regulate.

The Safe and Sound Protocol (SSP) helps gently recalibrate this threat response system via a bottom-up approach to healing, allowing your body to find relief and move toward a state of calm aliveness. As a 5-hour, app-based, at-home listening protocol, it offers a safe and effective way to help you experience more fluidity in both body and mind. Remarkably, it works passively—you simply receive the sound.

While the Rest and Restore Protocol™ (RRP) supports inner regulation and connection to self, the Safe and Sound Protocol (SSP) enhances your ability to engage with the outer world. By helping your nervous system perceive safety in sound and social cues, SSP can improve social ease, emotional regulation, sensory tolerance, and overall resilience in daily life. As your system settles, physical symptoms like muscle tension, headaches, digestive discomfort, disrupted sleep, and more often begin to ease as well.

People often turn to the Safe and Sound Protocol (SSP) for support with:

  • Anxiety and depression
  • Disinterest in social connection
  • Mood swings or irritability
  • Inability to concentrate, brain fog, and poor memory
  • Difficulty relaxing
  • Unexplained physical symptoms
  • Insomnia
  • IBS or digestive discomfort
  • Chronic pain or muscle tension
  • Headaches
  • Sensory sensitivities
  • Low heart rate variability
  • Slow recovery after stress or exertion

You may not realize your nervous system is operating from a dysregulated—or threat—state. You might simply notice a list of seemingly unrelated symptoms that you can’t quite get a hold of. Many of us assume this is just modern life, but it doesn’t have to be. You can change how costly it feels to live in your body.

By microdosing safety through sound, your nervous system learns a new way of being—rooted in openness and calm rather than vigilance and contraction.

The five-hour SSP is delivered through an easy-to-use app, available for both iPhone and Android. You can listen from home on your own schedule, and depending on your program, we may listen together at certain points.

Some people listen daily, while others follow the rhythm their nervous system allows. Completion time varies from a few weeks to several months, depending on your system’s needs. Throughout the process, we’ll adjust your frequency, duration, and schedule based on how you respond.

For example, it took me about nine weeks to complete the program. My sessions ranged from daily to every few days—sometimes just a minute or two, other times up to fifteen. The pace naturally shifted as my nervous system integrated each hour of listening.

This information includes proprietary content about the Rest and Restore Protocol, used with permission from Unyte Health Inc. —  leading provider of evidence-based listening therapies for nervous system regulation.