Hi!

Are you doing your exercises in a gym or at home? If in a gym they should have those big balance balls. I was doing my sit-ups using them and after just 2 weeks I could wear my hipster jeans!

There's no easy way unfortunately and just 20 of those 'bad' moves on the ball are much harder than on the floor, as you have to keep the balance involving deep muscle tissue. I did 3 sets of 25.

The boat pose in yoga is great too for that bulging lower abdomen

You can find lot of tips on General Exercise Forum on this site.

Good luck!