I checked the S&C FAQ & the link to the recommended core exercises is dead. My routine is the StrongLifts 5x5 & I've been doing it for about a year & some change now (haven't had a ton a success due to inconsistency in diet & working on fixing this god damn APT). That said, I've gotten my weight up in the past two years from 175ish to 180 & now 190ish in the last few months which is great, problem is that most of the weight goes to my stomach unfortunately & I have that god awful "skinny fat" look & the weight isn't distributed throughout my body (legs & arms). That said, I'm looking to bulk (I wanna put on at least 40 lbs & then cut like 15 lbs or so) & from what I've researched, the key to killing this look (from a bulking perspective) is to increase your calories, lift more intensely & work on your core. The only 2 core exercises I've been doing is the Russian Twists & hanging leg raises but I barely even feel them & I'm never sore from those exercises. So the question is, what're the definitive core exercises that're quick & easy to implement in my routine? I want some core exercises that're gonna leave my core sore after I've finished performing them.