I've been an avid lifter for most of my life (51 currently), focusing mostly on strength, power and functional fitness. However, Degenerative Disc Disease keeps kicking my ass, so I've switched to hypertrophy training in the past few years. Lighter weight, more focus on "connection" and much higher rep range. I never really took that kind of working out seriously before and was a little uncomfortable with aesthetics as the goal, but the workouts themselves are intense if you do it right. I mostly follow a PPL split, three on and one off. My day off is my long run day. My goal is to do cardio following the workout, but I'm usually too spent by then. For the sets themselves, I usually do a series of three giant sets (four sets of four exercises in one superset, with a goal of 20 reps per exercise) with one compound lift for strength at the end (five reps of five sets of flat bench (push), deadlifts (pull) and squats (legs, obvo)).
I started following Ryan Humiston on youtube, and it's life-changing, for me at least.