Christmas: But Make it Circadian Friendly

Nov 23, 2025

My Circadian-Friendly Christmas Tree Protocol

(How I keep a 9-foot live tree cozy, beautiful, and melatonin-safe)

Before we start:  Click here to watch my video that gives you a tour of all my favorite things on sale for the holidays

Click here for my most up to date Holiday Gift Guide (including amazon deals on my favorite vibration plate & walking pad)

Every year I get the same question:

“How do you keep a Christmas tree in your house without wrecking your circadian rhythm?”

So here’s exactly what I do -step-by-step -with my own 9-foot live tree.

1. First: No, I’m not worried about toxins from live Christmas trees.

There’s a lot of fear-based content online about “toxins” from evergreen trees.

For most people, this is not a realistic concern - especially if you:

• keep your tree watered

• use a HEPA purifier (I use my JASPR air purifier)

• don’t have a known pine allergy

I’ve had live trees for years (and with 2 kiddos who have allergies and sensitive systems). Zero issues.

2. The lighting is what determines whether your tree is circadian-friendly.

This is the part almost everyone gets wrong.

I use incandescent mini lights, not LEDs.

Here’s why:

LED Christmas lights = bright blue spikes

When you measure them on a spectrometer, LED strands produce strong blue peaks and higher overall brightness - exactly the kind of light that suppresses melatonin, increases alertness at night, and shifts circadian timing later.

Incandescent mini lights = no blue spike

 

My spectrometer shows very little blue light, a warm continuous spectrum, and far lower brightness.

This is why incandescents feel calming instead of stimulating.

 I use 9 strands of incandescent minis on my 9-foot tree.

These are the lights I use.

3. Lux matters: Measure from where you actually sit.

This is the piece most people overlook.

I don’t measure lux next to the tree.

I measure lux from the couch - the place I’m actually spending my evenings.

Using MyCircadianApp, the reading from my sofa comes out to:

6 lux.

 

That is well within the range that won’t meaningfully suppress melatonin for most people.

Your goal:

Keep your evening environment the 3 hours leading up to bed under ~10 lux, and ideally under 5–6 lux, depending on your sensitivity (learn more about lux in my free webinar - click here)

That’s why the bulb type matters so much - LED trees tend to push lux & blue light far higher.

Download my free lightbulb guide here for more home options.


4. How to make your tree circadian-friendly:

✔️ Use incandescent mini lights

Avoid LEDs if you want to protect melatonin.

(Link to my exact strands) 

✔️ Use MyCircadianApp to measure lux

Measure from where you sit - couch, dining table, etc.

Not from next to the tree.

(Learn more about WHY lux matters in my free webinar)

✔️ Keep the room otherwise dim

 Don’t combine a bright tree with overhead LEDs or bright lamps.

✔️ Turn the tree OFF before bed

I unplug mine every night. Incandescents run warm, so it’s good practice anyway.


5. Safety & care for live trees

Live trees are amazing - but do take care of them:

Water it daily. A dry tree is flammable.

Use a humidifier underneath (I run mine on low). It prevents needles from drying out.

Keep incandescents off when you’re not home or asleep.

Consider a purifier like the Jaspr (code SARAK for $400 off) nearby if you’re sensitive to smells or allergens.

In short:

A Christmas tree can absolutely be circadian-friendly - it just comes down to lighting, lux, and nighttime routines.

If you follow this protocol, you can keep the holiday magic and keep your melatonin intact.

PS - Click here to tour my house and see all my favorite things!

AND - 

Click here for my most up to date Holiday Gift Guide (including amazon deals on my favorite vibration plate & walking pad)

Our tree (still needs ornaments - but we are off to a great start!)

Be notified of new events as soon as they are open & get special discounts for being a subscriber.

 
Unlock 10% Off Any Product In My Store*
*excluding the Sarah Kleiner Wellness Membership and my Course Bundle

 

We hate SPAM. We will never sell your information, for any reason.

Back to Blog

Be notified of new events as soon as they are open & get special discounts for being a subscriber.

 
Unlock 10% Off Any Product In My Store*
*excluding the Sarah Kleiner Wellness Membership and my Course Bundle