Recess isn't a break from learning. It's fertilizer for it

If you've ever observed an elementary class file back in from recess — flushed, loud, half their shirts untucked — and thought, okay, now let's get back to real learning, I want to gently push back on that word "now." Because based on what neuroscience tells us about play, the real learning was already happening. It just didn't look like it.

The chemical doing the heavy lifting

When we play — run, build, chase, invent games with rules only we understand — our brains release a substance called BDNF, or brain-derived neurotrophic factor (Greenough & Black, 1992; Gordon et al., 2003). I like to think of BDNF as fertilizer. Not a metaphor I invented, but one that's stuck with me because it's exactly right: BDNF doesn't teach us anything directly. It just makes the soil better for whatever gets planted next.

And here's the part that should make every one of us educators sit up: BDNF fuels growth specifically in the hippocampus and prefrontal cortex — the regions responsible for memory, learning, language, and logic (Debenedet & Cohen, 2011). Those aren't peripheral brain areas. Those are the ones we're trying to reach every single time we teach a lesson.

It's not just chemical — it's physical

Movement adds a second layer to this. When we are physically active, our brains get flooded with oxygen and neurotrophins, which increase the number of connections between neurons (Jensen, 2005). More connections means more pathways for information to travel — which is, when we strip away the jargon, what learning actually is.

Play also does something else worth naming: it lets learners take risks and make mistakes without real consequences. Try a plan, watch it fail, adjust, try again — that loop, repeated hundreds of times on a playground, is the same loop we're trying to build in a science lab or a math problem set (Fordyce & Wehner, 1993).

What this means for Monday morning

None of this means tossing the pacing guide. It means seeing recess, movement breaks, and playful transitions differently — not as time stolen from learning, but as the conditions that make learning possible in the first place. A few small shifts worth trying together:

Protect what we already have.

If recess is on the chopping block when the schedule gets tight, that's the moment to advocate for it — not because kids "deserve a break," but because we're protecting the neurological conditions for the next lesson to land. You may be interested in this policy brief from the American Academy of Pediatrics.

Build in movement before heavy cognitive lifts.

A few minutes of active play before a dense lesson isn't a warm-up — it's priming the exact brain regions we're about to ask our students to use.

Let "off-task" wiggling be what it is.

The student tapping a pencil, bouncing a leg, or doodling in the margin may be doing more for their attention than sitting perfectly still ever would.

The wiggly, giggly, seemingly off-task moments in our classrooms aren't a detour from learning. They're the fertilizer. Let’s trust the science, and give play room to do its work.

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Sources

Greenough, W.T., & Black, J.E. (1992). Induction of brain structure by experience: Substrates for cognitive development. Developmental Neuroscience, 24.

Gordon N., Burke S., Akil H, Watson S., & Panskepp J. (2003). Socially-induced brain 'fertilization': play promotes brain derived neurotrophic factor transcription in the amygdala and dorsolateral frontal cortex in juvenile rats. Neuroscience Letters, 341(1), 17-20.

Jensen, E. (2005). Teaching with the brain in mind. Alexandria, VA: ASCD.

Fordyce, D.E., & Wehner, J.M. (1993). Physical activity enhances spatial learning performance with an associated alteration in hippocampal protein kinase C activity in C57BL/6 and DBA/2 mice. Brain Research, 61(1-2), 111-119.

Debenedet, A. T., & Cohen, D. (2011). The art of roughhousing. Philadelphia, PA: Quirk Books. Template

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