 The review aims to update the knowledge of how many steps are enough for healthy adults and inform step-based recommendations consistent with current physical activity guidelines. Normative data indicate that healthy adults typically take between 4,000 and 18,000 steps a day, and 10,000 steps a day is reasonable for this population. Interventions demonstrate incremental increases on the order of 2,000 to 2,500 steps a day. The results of seven different controlled studies demonstrate a strong relationship between cadence and intensity. A direct estimate of minimal amounts of MVPA accumulated in the course of objectively monitored free-living behavior is 7,000 to 8,000 steps a day. A scale that spans a wide range of incremental increases in steps a day and is congruent with public health recognition that some physical activity is better than none, yet still incorporates step-based translations of recommended amounts of time in MVPA may be useful in research and practice. The full range of users, researchers to practitioners to the general public, of objective monitoring instruments that provide step-based outputs require good reference data and evidence-based recommendations to be able to design effective health messages congruent with public health physical activity guidelines, guide behavior change, and ultimately measure, track, and interpret steps a day. This article was authored by Roe David A, Opochon Michelle, Mewtree Nanette, and others. We are article.tv, links in the description below.