Diving deep into the jungle of fitness methodologies, we're breaking down what truly works for muscle growth, especially if you're rocking that over-40 badge of honor. 🏋️♂️🔥Today, we're pitting the time-honored principle of progressive overload against the titans of group fitness: Orange Theory, F45, and CrossFit. It's a showdown to see which approach can really dial in that muscle tone and sculpt the body composition you're after as you navigate the prime years of fitness beyond 40.Progressive Overload: The backbone of strength training. Incrementally increasing the weight or intensity to push muscle adaptation. It's the slow and steady that might just win the race. But is it enough in the fast-paced world of fitness?Orange Theory: Heart rate-based high-intensity interval training. It's got the sweat, the science, and the community. But does it prioritize muscle growth?F45: Circuit-based HIIT with a twist of functional training. It promises to blast fat and build lean muscle, but can it deliver on a larger scale for those targeted gains?CrossFit: The behemoth of high-intensity, varied workouts. Known for building some serious athletes, but is it the right fit for everyone looking to tone up after 40?Couple whichever path you choose with a solid understanding of macros and a commitment to lifting weights, and you’re on your way to mastering your body composition.