You can't just aimlessly go to the gym. That's a surefire way to make minimal, if any, progress. The sad thing is this is what most people do. There are ways to set yourself up so your training is optimal. Find out how in IFBB Pro John Jewett's latest article.
Stop doing cardio and you will never lose your gains—this answer seems like the obvious one, right? It’s commonly thought that in concurrent training—the combined training of aerobic and resistance training—endurance training creates some interference that can limit hypertrophy signaling. As a result, bodybuilders all around have been trying to limit cardio to prevent muscle gains from slipping away, but if implemented correctly, cardio won't steal your gains. From a bodybuilding standpoint, cardio must happen sometimes to create the energy deficit possible to get stage lean. From an off-season perspective, there is some merit to continuing cardio for general health reasons, such as aiding sleep and stress management, and allowing those squats to wear out your quads before wearing out your lungs. I am going to cover how to implement cardio with the least impact to strength and hypertrophy gains.
Hypertrophy—the breaking down of muscle fibers so that they rebuild themselves with increased size—is the point of training. If you want to achieve the greatest degree of hypertrophy, you must be in tune with what you're doing in the gym and how you're doing it. No one understands this better than IFBB Pro John Jewett. He explains how to properly initiate and reach maximum hypertrophy in his latest article.