What is a good AB workout?




Background: I’m 140 lbs, 4.5% bodyfat, 5′ 7” and I’m 20 years old.

For the last 4 months now I have been going to the gym 3-4 times a week so it has become a habit of mine to do. So lately I’ve been figuring out the detailed workouts and for the last week and a half I have been doing (what I thought) an extensive workout on my abs and obliques; I have been doing a traditional ab workout on a machine that involves you sitting down(like a chair; but it has a cross bar on the chest), and you push down on the cross bar/pad with your chest with a smooth motion, up and down~ I do 3 sets of those, and 35 reps a set @ 87.5 lbs(I can feel a burn doing this)- After I finish my 3 sets I go over to the Oblique station and do 1 set of 35 on either side and I call it good.

I do 4 sets of abs per workout and I do that about 3 times a week. so About 12 sets a week; I heard you are suppose to do 20 sets a week max, and no more than 200reps a day.

But; my trainer has told me to do..->
…-> He tells me, "since I’m so younge I should be doing something else, something more extensive." But I really don’t know what else I could be doing, Any advice/tips would be great.




Pull ups using the Iron Gym pull up bar?




I have recently purchased an Iron Gym pull up bar for my doorway in my dorm room. I had already measured my doorway and realized that the bar won’t fit because it’s not long enough. I’m gonna be doing chair assisted pull ups, so my whole body weight won’t be on the bar. I’m wondering if it would hurt for me to make my own cross bar so that the bar will fit in my doorway. What do you think?

The bar fits up to 32 in doorways, but I’m gonna have to make a bar that will fit my 38 in doorway.
I don’t want to do anything that could get me hurt, but this is my best option here at school.




  
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