Three distinct male body types are presented, inviting the viewer to choose.

The video starts with three male body types: skinny, fit, and curvy. A hand then selects 'fit'. Next, the user is prompted to choose a goal: 'lose weight' or 'gain muscle'. The user selects 'lose weight'. Then, the user inputs their age, sex (male), height (1.91m), and weight (55kg). The app calculates BMI (18), body fat (3%), and ideal weight (64kg). Finally, a workout plan is displayed with exercises for chest, abs, arms, and legs, each with a duration. The video ends with animated effects around the fit body.