This is a great ab workout I found on the internet and thought I would share it on here. First id like to say that just doing this exercise wont get you a six pack. Not that its not a good exercise but to get a good pack you need to burn off all the fat that lies on top of them. Eating right, running or biking is a great way to burn unneeded fat. This isn't a speed workout, take it slowly to get the best results, the whole workout should take about 5-10 minutes. Also, this is very important, just because you've been working out does not mean you can eat that donut or those cookies, eat healthy!
Step 1: Preparing
Before any workout you should make sure you're well hydrated and have et. Working out on an empty stomach or while dehydrated is unhealthy and does you no good. However don't over eat and drink to much before, just a small snack and about 8oz of water depending on your workout.
It's also very important to do some stretches before you work out, stretching loosens your muscles so you don't pull anything while exercising.