I ride my bike for exercise. I ride my bike for transportation (even throughout an icy Minnesota winter). I ride my bike because it’s better for the environment and better for my community than climbing behind the steering wheel every time I need more bread or wine or toilet paper.

But the biggest reason I ride my bike– in all weather day and night– is because it makes me happy. It’s meditation, therapy and pure hedonistic pleasure all rolled into one. Rarely do I wheel my beat-up old Trek back into the garage without a smile on my face.

I used to think this was just one of my own quirks, but new evidence keeps pouring in that bicycling boosts creativity, health and general well-beingifor many people.

Sarah Goodyear—an insightful urbanist blogger from Brooklyn—points to a Danish study showing that kids who bike (or walk) to school do better in class. (Actually, these findings are an accident; the researched discovered this while studying the effects of diet on school performance.)

But bikes aren't just for kids. Goodyear directs us to an article in Britain’s well-respected Independent newspaper that quotes Harvard Medical School Psychiatrist John Ratey saying: “Cycling is also increasing a lot of the chemistry in your brain that make you peaceful and calm.”

Ratey goes on to describe riding a bike as “like taking a little bit of Prozac and a little bit of Ritalin.” By which he means it's useful for treating both depression and ADHD.

Goodyear’s conclusion: “We need more research into cycling and brain science.”

My conclusion: Time to take a bike ride.