Neuroscientists Wendy Suzuki, PhD, Samuel Wang, PhD, and Gary Small, MD explain how movement increases blood flow, boosts growth factors like BDNF, and floods the brain with mood-lifting neurochemicals. The brain and body are in constant conversation, and plasticity means your wiring is never fixed. According to Suzuki, even ten minutes of walking can shift your brain’s chemistry immediately, flooding it in a ‘bubble bath’ of positive neurochemicals.