Dynamic Group Fitness Individuals Stationary Bikes

Design a dynamic group fitness scene featuring several individuals on stationary bikes in an energetic setting. Replace the brightly lit stage with one featuring ambient, colored lighting and a more varied background, like an urban gym vibe. Change the attire to include a mix of athletic wear types, such as tanks and joggers, rather than swimsuits. Eliminate any brand markings or logos and ensure the focus is on the lively, engaging atmosphere of the workout session.