The document outlines 4 common mistakes people make when starting a new fitness program: 1) Maintaining a poor diet and not realizing diet is important for results, 2) Not working out enough and only exercising occasionally, 3) Starting a new routine too quickly and risking injury by not building up intensity, 4) Skipping warm ups which increases injury risk and unsafe heart rate spikes during cardio. It concludes by recommending Prima Fitness for affordable fitness equipment.