Oh my land, I didn't learn how much one used ones obliques all day long until the day after I started squatting like a big girl.
It hurt so much I ached trying to turn myself over in my sleep!
I never do crunches or leg raises because I hate getting on the floor for ab work!
Twice a week, I do two weighted ab moves (unless I'm too wiped out after doing legs
) . One of those moves is always for obliques - so I work obliques on their own twice a week. I'm going to start doing one-armed deadlifts as supplemental move, so they'll get some more work with that, too.
I used to do side bends for accessory work; now I do Saxon side bends or full contact twists. Saxons are a big challenge for me. I can do regular side bends with 35# dbs or more, I have to do Saxons with 8s and 5s (sometimes 3s)! I'm going to try the wood chops on the link below (I'd been doing them wrong before!) I'd like to work up to doing Turkish get-ups or side presses/windmills more often, but they're rough on my bum shoulder.
(get-ups, saxon side bends and one-arm dls are pictured here:
http://www.testosterone.net/articles/218exer.html )
(bent press, side press and full contact twists pictured here:
http://www.testosterone.net/nation_articles/205abs.html )
Interesting article about rotational strength and its larger role in movement and strength:
http://www.paulchekseminars.com/articles.cfm?select=31
I haven't considered belts - I don't think I'm at that level yet. How would I know if I needed one?