This chapter presents the benefits of exercise benefits. Stronger exercise habit is beneficial because it should increase the likelihood of frequent exercise, as is supported by the commonly observed association between self‐reported habit and exercise frequency. Having strongly formed exercise habits makes it less likely that people will seek out or be tempted by opposing unhealthy alternative behavioral options. The formation of exercise habits also has the benefit that it is less cognitively demanding than non‐habitual exercise. The chapter explores how exercise habits are formed. Helping people to form exercise habits requires encouraging people to exercise regularly and in the same contexts, so that habit associations develop. Factors can impact habit formation in several ways: by increasing or maintaining the motivation to become physically active, by aiding the translation of motivation into repeated action, or by strengthening the reinforcing value of each repetition on the formation of cue‐behavior associations.