No, and I wouldn't. Follow the program as is. I'm in week 8, and had to take a deload (rest) week cause I'm worn out. Then again, I don't have NROLFW experience, but I have done other home workout programs in the past. Use these first few weeks to really get your form down, then again, you probably already have with NROLFW. Good luck.

I do, but I'm used to doing four day splits with much longer sessions. When I have time I do another day of glutes, and maybe shoulders and core. I run and walk, maybe do some HIIT every week, too.

Yes I do curls, flyes, lunges and Roman chair leg raises.

Other days I do Bootcamp and/or circuit training and also train in karate once a week.

I'm about to start my second cycle of madcow (when I'm not snowed in. Grrr). It's pretty similar to SL except the weight goes up every week instead of every workout, its only 1 max set of 5, and the workouts go A1 B A2 A1 B A2. On A1 days I'm doing assisted pull ups and assisted dips, on B days I'm doing weighted hypers and light curls, and on A2 days I'm doing Pull ups, dips, and triceps push down with a rope.

Accessory work isn't required, and typically consists of exercise to help your weak points. Many beginners won't really know their weak points yet as they are still tweaking form etc. There are a few things you pretty much can't go wrong with:

1: Core aka abs and erectors. You should be feeling your core work on pretty much every lift, if you're not you either have a core of steel and don't need accessory work , you're not heavy enough yet, or you should get a form check.

2. Curls. This makes your elbow tendons and ligaments happy. They don't have to be heavy I do 10# curls. This will help prevent elbow tendonitus during bench when you're gripping the crap out of the bar, and will also help prevent bicep tears on your supine arm during heavy deads.

3. Triceps work. Triceps help your OHP and bench lockout. Also buff tris look cool.

4: Hip thrusts. Dat *kitten*.