Bryan Mataya / Top Fitness Coach for busy professionals over 50 on Instagram: "As a man over 50 looking to gain 4 to 6 pounds of lean muscle while only training 4 days per week, here is exactly how I’d set up my calories and macros so the weight you gain is muscle, not belly fat. Most guys over 50 try to “bulk like they did at 25” and just end up getting softer. At our age, it’s all precision. You fuel the muscle without fueling fat storage. Here is how I’d do it. 1. Calories: Slight Surplus Onl