A practice infive-gram hands.
Biodynamic Craniosacral Therapy with Robert Castellino, BCST, RCST. Quiet, fully-clothed sessions that follow the body’s own inherent treatment plan — recovery from pain, trauma, and injury.
I came in carrying years of held tension. I left feeling, for the first time in a long time, that my body had remembered how to rest.— Client, Niwot
What people most often arrive with — and what often eases as the work unfolds.
The work follows the cerebrospinal tide.
Craniosacral therapy attends to the slow, rhythmic motion of the cerebrospinal fluid and the dural membranes that contain it — from the cranium to the sacrum.
A session, simply.
- Session length
- 30 to 90 minutes, depending on what arrives.
- What to wear
- Wear clothes you find comforting and restful — clients remain fully clothed throughout, except for shoes.
- Office setup
- You lay face up on a comfortable treatment table, often with a light blanket, and a small pillow under the head.
- The approach
- A brief check-in, then a series of light craniosacral holds. Conversation as the session calls for it.
- For whom
- Adults, infants, elders, and family pets — anyone whose system is asking for a quieter pace.
“If I do this work well, you barely remember I was there. The body did the work. I just held the room steady while it did.”
More about BobIn their own words.
A heartfelt thank you for the craniosacral session on Wednesday. Your lovely office space immediately put me in a relaxed and comfortable state. You have a professional manner that projects a very calming energy; I felt totally at ease and that I was in good hands. Afterward, my energy was more focused, and although I had a busy afternoon, I felt very relaxed and present. Thank you again ☀️
I felt a striking relief immediately — more relaxed and in-tune. During the treatment, Bob really connects with what's happening in my life as well as my body. It has been very helpful for me.
I had headaches and 90–95% of the pain disappeared immediately. Bob has a kind gentle demeanor. His touch is warm and energizing. I felt comfortable, uplifted and nurtured. I experienced an extraordinarily deep sense of relaxation and peacefulness that set the tone for healing over several visits.
We talk often about how your presence working with our Mom made it possible to face her challenges being senior and aging. We cannot thank you enough for all the support and friendship you offered us.
Book unrushed time
Allow extra space on the calendar before and after. The system settles when there is nowhere to be next.
Wear what feels restful
Soft layers, no belts, no constricting waistbands. You stay fully clothed throughout.
Eat lightly
A small meal an hour or two beforehand. Plenty of water through the day.
Arrive a few minutes early
The pace of the session begins on the doorstep — no rush from car to table.
Animals — dogs, cats, horses — also benefit from craniosacral work. Sessions are arranged by phone and tailored to the animal’s temperament and setting.
A few common questions.
What does a session feel like?
Most clients describe it as a deep settling — a slowing of the breath, a softening of the body's holding patterns. The touch is light, around five grams of pressure, and you remain fully clothed throughout.
Is this like massage?
It isn't. Where massage works directly on muscle and fascia, Biodynamic Craniosacral Therapy listens to the slow rhythms of the cerebrospinal fluid and the inherent treatment plan of the body. Most of the work happens in stillness.
How often should I come?
Some people come once and that is enough. Others find a series of three to six sessions, spaced a week or two apart, gives their system time to integrate. We will talk about what fits your situation.
Do you accept insurance?
Not directly. Sessions are paid at the time of booking. A receipt can be provided on request.
Can children and pets really benefit?
Yes. Infants in particular respond well — the work is exquisitely gentle and meets them where they are. Family pets can also benefit; arrange these sessions by phone. Bob's own dog has had positive responses to craniosacral work for arthritis, muscle cramping, and dental issues.
What is the practitioner's role during a session?
Through a process of inquiry and subtle touch known as craniosacral holds, the therapist collaborates with the client to invoke their inherent treatment plan. The practitioner sustains the energetic field and the presence of the third — the working ground for the client's release of blocks held in the body and mind.
What's the difference between a feeling, a story, and a sensation?
The intention of every session is to explore the sensations within the body where your attention is drawn. It can also be useful to talk through the story you arrive with and any emotional feelings tied to it — but the sensation is the door the work goes through.
Where is the office?
The office is at 3825 Iris Ave, Suite 250B, on the second floor, in north Boulder. There is free parking at the building. Bob will meet you when you arrive, unless he is still in session with another client. Directions are sent with your booking confirmation.