I average 4 days of workouts per week at the gym (~1 hr 45 sessions). I study full-time and work part-time, so it's whenever I can spare it. On days when it's not possible, I make sure to be active both indoors and especially outdoors.
The gym involves total performance move sets with a heavier focus on strength and lifting and a bit less on cardio. I have a hybrid style, so pretty much every part of the body gets done: arms, legs, especially the upper core.
I've also been swimming for my whole life, so the pool is always there. I cannot stress enough how good it is for your body.