Walk Together. Live Longer.

The brain runs on a body that moves

The single most evidence-backed thing you can do for your aging brain is move your body every day, ideally together with someone you love. Walking improves cerebral blood flow, raises BDNF (the brain's growth factor), and is listed by the 2024 Lancet Commission as one of the largest modifiable risk factors for dementia.

How Does Walking Protect Your Aging Brain?

A 2023 meta-analysis in the European Journal of Preventive Cardiology found that walking as few as 3,967 steps a day was associated with lower all-cause mortality, with each additional 1,000 steps tied to roughly a 15% further reduction. Brain benefits are closely linked with exercise: aerobic activity raises BDNF, improves cerebral blood flow, and is consistently linked to slower cognitive decline. The 2024 Lancet Commission on dementia prevention ranks physical inactivity among the largest modifiable risk factors across the lifespan.

**The catch is sticking with it**. Most people find solo treadmill walking boring and quit within weeks. CoDo turns the walk into something you'll actually look forward to: a real trail, with a real friend or family member, in a setting beautiful enough that you forget you're exercising.

Read the research

A walk on its own moves your CoDo Age. A walk with someone you love moves it further.

• Cognitive bonus: A 2025 meta-analysis found that combining physical activity with cognitive training and social engagement produces greater cognitive benefit than any single intervention.
• Adherence: A 2017 study in the British Journal of Health Psychology found that exercising with a partner raised workout frequency by 35% versus going solo. The most effective dose is the one you'll actually take.
• Two risk factors, one walk: Physical inactivity and social isolation are both on the Lancet Commission's list of modifiable dementia risk factors. A CoDo walk addresses both at once.
• Loneliness as a clinical risk: The U.S. Surgeon General's 2023 advisory called loneliness a public health epidemic, with isolation carrying risks comparable to smoking 15 cigarettes a day.

Frequently Asked Questions

What is the best VR fitness app for walking?

CoDo is a social VR walking app for Meta Quest that lets you walk scenic trails with friends and family. Unlike solo fitness apps, CoDo combines physical movement with social connection, the two most important factors for long-term exercise adherence and health outcomes.

How many steps per day do I need for health benefits?

Research shows that as few as 4,000 steps per day can reduce all-cause mortality risk by up to 39%. Each additional 1,000 steps further reduces risk by about 15%. CoDo tracks your steps automatically through your Meta Quest headset.

Can I exercise with friends in VR?

Yes! CoDo is built around social exercise. You can walk scenic trails together in real-time, talk while you walk, and track each other's progress. Research shows that exercising with others increases workout frequency by 35% compared to solo exercise.

Does CoDo work on Meta Quest?

Yes. CoDo is available as a free download on Meta Quest 2, Quest 3, Quest 3S, and Quest Pro. The VR headset automatically tracks your steps and movement, so no additional hardware is needed to start walking.