The R3, why Shannon sleeps with it every night | Reviv
Shannon Kathol · her R3 routine

The R3 Shannon wears every single night.

¥12,900
One R3, yours to keep. No subscription, no add-ons.
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A lifelong athlete and mom in her 40s, Shannon kept waking up stiff, drained and in pain. She switched to the Reviv R3, worn overnight, and felt relief the first night. Months in, she sleeps through and wakes up lighter.

Real results, her words

Why Shannon won't sleep without it

Swipe through Shannon's clips. Tap any to turn the sound on.

What you're getting

The R3, the flat-plane guard behind her results

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Worn while you sleep

Overnight, plus a few daytime hours if you want to move faster. No routine to learn.

Gentle, steady pressure

The flat-plane design supports the jaw without locking your bite, so it can settle where it should.

Ready out of the case

Premium soft silicone, food-grade tested. No boiling, no moulding. Backed by a 1-year warranty.

What are the benefits

How did the R3 help Shannon?

The three changes she talks about most. Her experience, not a promise.

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Deeper sleep

She felt relief the first night. Now her jaw stays in a better position while she sleeps, so her body can actually rest. "I sleep through the night every single night."

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Less jaw & morning tension

The pounding headaches, stiff jaw and neck-and-shoulder tension she used to wake up with have eased off. "I wake up with less head, neck and shoulder tension."

More energy

Instead of waking up drained and heavy, she wakes up closer to the lighter, more energized version of herself. "Refreshed instead of broken."

How to use

Three steps. All of them easy.

Take the R3 out of the box and wash it
1

Take it out of the box and wash it

Wear the R3 to sleep and a few hours a day
2

Wear it to sleep and 2–3 hours during the day

Wash the R3 and let it dry
3

Wash it and let it dry

What to expect

Consistency is the whole game

  • Weeks 1-2: the adjustment phase. A little soreness or extra saliva is normal, your soft tissue is adapting, not a sign anything's wrong.
  • Build up gradually: shorter daytime sessions first, then overnights. Ease off for a bit if it ever gets sharp.
  • Over the months: the changes Shannon talks about, deeper sleep and less morning tension, come from wearing it consistently, not from wearing it harder.
Reviews

What people say about the R3

FAQ

Questions, answered

How should I start?

Wearing it: the standard pattern is overnight plus 2 to 3 hours during the day. Build up gradually with shorter daytime intervals first. The early phase is the hardest and gets much easier after a few weeks.

Early discomfort: sore teeth, achy gums and extra saliva in the first weeks are the soft tissue adjusting, not a problem. Take breaks if it gets sharp, don't push through pain.

Faster results: consistency first, then simple stretches like Bite and Hold alongside the guard.

How does sizing work?

Width matters most. Measure the outer edges of your upper molars at their widest point, shown in this size guide video.

Medium (46mm) fits teens and smaller mouths, Large (53.6mm) fits most adults, and XL (59.6mm) is for larger mouths.

Why does it work?

Think of the soft tissue over the skull like a balloon. Grinding your teeth down deflates it over time, what we tend to call "aging." Adding height back with gentle, consistent pressure runs the same physics in reverse.

How many people have done this?

Over 30,000 people have started using Reviv appliances and this method.

What is it made of, and what's included?

Premium soft silicone, food-grade tested. Your order is the R3 in your chosen size and colour, with its storage case and instructions, backed by a 1-year warranty.

¥12,900Reviv R3 · free shipping