Whenever you're not feeling this exercise work your abs like you want it to... You can move your hands out farther away from your body or your can hold it longer than 3-5 seconds.
You can also hold it for 10-30 seconds each time to feel it more in your abs and whenever this workout gets too hard just pull your hands in closer to your body.
Please don't think you can get a great six pack from only doing this
exercise... Yes, this exercise will
make your belly look better but in order to see the results (or see your
six pack) you have to remove the fat over your belly first and...

John,
GUYS NEED TO GET THIER BODY FAT BELOW 10% FOR THIER SIX PACK TO SHOW.