Time. It is the thing that most people claim they don't have enough of, and the lack of it is the most common excuse for not exercising. But everyone has fourteen minutes. 14-Minute Metabolic Workouts is the solution to everyone's time problem, in that it offers fitness-conscious people a variety of compact, science-based workouts that target the five components of physical fitness-cardiovascular endurance, muscular endurance, muscular strength, body composition, and flexibility. This complete guide includes information on cardio intervals, strength circuits, sprint intervals, muscle power workouts, and flexibility workouts-for people of different fitness levels to address everyone's individual needs.