Forever F15 – Intermediate 1 – Choose your fitness level! With beginner, intermediate and advanced levels, you can decide where your journey takes you. F15 offers a personalized approach to looking better and feeling better. Choose a fitness level that helps you achieve your goals and puts you on the path to permanent change New to fitness and nutrition? Start with F15 Beginner 1 & 2 to learn the basics and get the fundamentals of fitness and nutrition down before continuing on your journey. Already moderately active? Jump ahead to F15 Intermediate 1 & 2 to continue what youÆ’Ã‚Â¢â€šÃ¢â€šÂ¬â€šÃ¢â€žÂ¢re doing and complement your lifestyle! Already very active? Then, jump right into F15 Advanced 1 & 2 to create greater muscle definition and take your fitness to a whole new level.