
This 10‑week challenge is built on structure, accountability, and measurable progress—not crash dieting or chasing the scale. The focus is improving body composition while maintaining strength and lean mass, with scoring based solely on your personal starting point and progress.
All participants must be active GBSC members at the start of the challenge and maintain an active membership for the full 10 weeks.
Your score is based entirely on your personal starting point and the percentage of improvement you make over the 10‑week challenge. This ensures a fair system where every participant competes against their own baseline.

To ensure consistency and fairness across all competitors, the following standards apply: