The foundation of the YEE SYSTEMS program is core training. This is the area between your chest and knees. YEE SYSTEMS designed to train you from the center of your body out, for coordination and balance. Athletes understand the importance of balance and coordination in sports. YEE SYSTEMS is for everyone regardless if you compete in sports or not. This program designed to advance your genetic potential and overall condition. Strong ABS would enhance your overall combination routines or in a series to concentrate on the abdominal region. Some people can become obsessed with numbers in their training. YEE SYSTEMS is based on change to shock your routine so that there is no adaptation from workout to workout. Any athlete can do 1,000 sit ups, nonstop. Then they want to do more of the same exercise. It does not mean that your overall AB conditioning is stronger. YEE SYSTEMS encourages partner resistance and group training. The average number for repetitions in the YEE SYSTEMS is ten. You will be doing many exercises that use a towel with partner resistance to use of the medicine ball for added weight and resisting impact. Some exercises you will be doing solo but applying your own resistance. Machines and sit up boards cannot run with you on the program. The mats are your home base and can be set up anywhere. YEE SYSTEMS has few to no rest periods. An example would be doing a high jump-push-up, combination routine and you get winded. Instead of sitting down to rest, the group leader would have everyone doing AB work while they catch their breath and continue to another combination. There are so many options and variables that you will not repeat the same routine again. You do not want your body to get used to anything. All the abdominal exercises shown can be added into any combination or done between sets. There is no set rule on when to do them. Variety and unpredictability will make exercising fun.