Moving and thinking at once: orienteering, dual task and the brain
Introduction
Almost all modern exercise happens in settings that demand nothing of the brain: a treadmill, a stationary bike, a route you know by heart. The body works and the mind goes elsewhere.
There's an interesting line of research suggesting that exercise which also requires navigating, deciding and attending may add something for cognitive function beyond the same effort on autopilot. That's the logic behind orienteering, trail running, dancing and dual-task training.
It's worth presenting precisely, because it's a field with promising findings and a fair amount of noise.
A treadmill trains your heart. An unfamiliar forest trains your heart and the map you carry in your head.
What's reasonably established
Aerobic exercise benefits cognitive function, particularly executive function and particularly in older populations. It's one of the most replicated findings in the literature, though effect sizes are moderate and vary a lot between studies.
The hippocampus responds to exercise. There's a much-cited trial in older adults where aerobic training was associated with increased anterior hippocampal volume compared with controls. Replication attempts have produced mixed results, so it's best treated as a solid but not settled line.
Spatial navigation involves the hippocampus. Work on place cells and grid cells — Nobel Prize in Medicine, 2014 — established that a neural system dedicated to representing space exists, and it sits in the hippocampal formation. The London taxi driver studies are also well known, with greater posterior hippocampal volume associated with years of navigating the city.
Dual-task training reduces falls. In older adults, programs combining movement with a cognitive task show favorable results for gait and balance. It's one of the most practical and best-supported applications.
What isn't demonstrated yet
That combining exercise with cognitive demand is clearly superior to exercise alone for general cognition. The hypothesis is plausible and there are studies on "enriched training" with favorable results, but the evidence doesn't yet allow a confident claim.
Nor is it established that any specific sport — orienteering in particular — produces specific brain benefits superior to others. What can be said is that it combines in a single activity several ingredients with individual support: aerobic work, navigation, uneven terrain, being outdoors and decision-making.
And there's a much simpler reason to recommend it: it's more fun, and therefore easier to sustain over time. Adherence remains the factor that most determines the results of any program.
Ways of moving that also make you think
Orienteering. Running through natural terrain with a map and compass, looking for control points. It demands continuous navigation, route decisions under fatigue and attention to the ground. There are clubs in nearly every region and many public events welcome beginners walking the course.
Trail running and hiking new routes. No need to compete: uneven terrain already forces you to adjust every step, and exploring unknown routes activates navigation.
Dancing. Probably the best-supported option in older populations: learning sequences, rhythm, coordinating with a partner and a social component. Several studies in older adults find favorable results for cognition and balance.
Racket and team sports. Anticipation, reading the situation, quick decisions under pressure.
Climbing. Solving a route is literally solving a problem with your body, involving planning and sequence memory.
Martial arts. Sequences, reaction and inhibitory control.
Dual task: how to train it
It's the structured version of all of the above and can be done without equipment. It consists of adding a cognitive task while maintaining movement.
Examples, from easier to harder:
- Walking while counting backward by threes from 100.
- Walking while naming words in a category (animals, cities, kitchen items).
- Walking while alternating letters and numbers: A-1, B-2, C-3.
- Marching in place while responding to cues: step sideways on "right", stop on "stop".
- Tossing and catching a ball while heel-to-toe walking.
How to dose it: 10-15 minutes, two or three times a week. The difficulty should be enough that you make some mistakes: if you're perfect, it's too easy.
A crucial precaution: in older adults or anyone with balance problems, this is practiced in a safe setting and with supervision. Walking under dual task is exactly where stumbles show up, and that's both the reason to train it and the reason to be careful. Starting seated or with support is perfectly valid.
A note on GPS
There's an observation that recurs in navigation research: using turn-by-turn guidance reduces the construction of mental maps of the environment compared with navigating on your own. The studies are mostly laboratory-based or short-term, and don't support concluding that GPS impairs cognition.
Even so, the practical implication is cheap and risk-free: now and then, go somewhere familiar without looking at your phone, orient the map before setting off, notice landmarks. It's free spatial training.
Final thought
The honest conclusion has two parts. What matters for your brain is that you exercise: that's well established, and no exotic modality replaces it. And within that, choosing ways of moving that also make you orient yourself, decide and coordinate adds plausible extra stimuli and, above all, makes it far likelier that you'll keep doing it. Swap one weekly session for a route you don't know — walking, running or cycling — and leave the navigation app closed. It's the most enjoyable version of training.