A general yet a simple question, what makes a successful gym?
Zero to little debt, low over head, positive cash flow, keeping a budget, re-investing a portion of profits back into the business, branding and marketing. There's ton of other things but IMO, this is the main model and business 101.
Every year we re-do our business plan. This year we re-worked the business plan for a bigger facility and for the first are seeking investors (use other people's money). This plan is a 47 point detailed plan with a three year forecast.