So I'm 5'9 150 lbs of pure not muscle. When I look in the mirror I see a overall slim guy with a gut. I never feel like getting out of bed in the morning and when I do I feel so sluggish I can barely stand. I'm feeling slow, my reaction time has been lessened and I feel sore even though I don't go to the gym. I just signed up for a local sports club with a swimming pool, cardio room, weight room you know the likes. I really need to know how to get back into everything. I've just gotten my diet in check. I get 1 gram per pound of my bodyweight, my basic diet consist of oatmeal, lot of dairy products (milk, cottage cheese, eggs, etc.), salads, chicken, turkey, steak , tuna, potatoes, peanut butter. I plan on having a protein shake in the morning and one right after a workout. Overall I just want some general helpful tips on what I should really concentrate on when I get back into the gym.