Target particular muscle groups on particular days. Almost universally, serious bodybuilders will isolate muscle groups to train on particular days in the week. You might have one day that you just train legs and abs, then the next day you'll train pecs and arms, then the next day you'll do shoulders and back, and then you'll do an ab shredder workout. Your last training day can be cardio, and then give yourself two days off to recover.
Train four to five times per week. Although you might be tempted to train seven days a week, or even multiple times per day, this will actually slow down your progress and damage your muscles. Aim for four to five training times per week, varying the types of exercises you do. The human body is highly adaptable, so keeping your muscles guessing is a key aspect of bodybuilding and weightlifting.
Let's face it, injury risk increases with age. Furthermore, when you’re injured, it takes longer for you to recover and eight weeks out of commission is a lot more of a life-altering event now than it was in your 20s. When something hurts, the wrong kind of hurt, either train around it by doing exercises that do not cause more pain, or take off all together.
For every person who lifts weights these days, it seems there are two who have a podcast about it. There are more bodybuilding tips promising greater strength and muscle than ever before, and along with them a ton of confusion; one buffed-up Instagrammer says lifting heavy will get you swole, while a well-known fitness personality has claimed in recent years that two 30-minute workouts per week netted him 34 pounds of muscle in a month.