One awesome ab exercise you can do: - first, lay down on your back, preferably on a yoga mat or some sort of cushioned or carpeted floor - second, extend your legs upward, feet parallel to ceiling, heels touching and feet in a v formation - slowly lower your extended legs to the count of five and then raise them again to the count of five (make sure to keep them extended) - do this five times in a set (3 sets and you'll be burning no matter who you are) - if you want to make it harder, at the end of the fifth one, hold your legs at the lowered position without touching the ground for 10 seconds. :) Seriously, my whole class was pooped and some of those guys are athletes. Don't push yourselves too hard. Take a break if you need to. My advice on doing this one is focus on your breathing and it'll be easier to get through your mental block. I don't usually post stuff like this, but I saw that one of my followers was trying to lose weight, and it inspired me to do the same. I'm using this as part of my ab workout from now on :)