title: Improve your health and fitness in 'Just 6 weeks'.
authors.affiliation: Valora Research Group, Health Sciences Faculty, San Jorge University, Zaragoza, Spain.
authors.forename: Lucía
authors.initials: L
authors.lastname: Sagarra Romero
authors.affiliation: Universidad de Valladolid, Valladolid, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Monroy Antón
mesh_terms: D006293:Health Promotion / Q000379:methods*; D006801:Humans; D063731:Mobile Applications; D010809:Physical Fitness
keywords: Aerobic fitness; App; Exercise; Training