New research confirms that walkability is good for us. Wali and colleagues examined “high resolution data for 476 participants in the Rails and Health study on health care costs, mode specific MVPA[ moderate-to-vigorous physical activity], parcel-level built environment, and neighborhood perception surveys. . . . A 1% increase in bike, walk, and transit-related MVPA was associated with lower health care costs by −0.28%, −0.09%, and −0.27% respectively. A one-unit increase in neighborhood walkability index correlates with a 6.48% reduction in…