In order to be effective, fitness training should be well assimilated and customized to that individual. The process of learning and understand the different exercises can take a quite a bit of time, especially if you are new to working out. It is quite common for one to start a program and give up on it because it is too hard, or they can’t do all the exercises or they just simply changed their mind. However, giving up on an exercise program and moving on or quitting all together is not a good thing to do.
For beginners, I recommend following a workout program to a ‘T’ (providing they are physically able to). As you become more mature in weight training, you will learn what exercises your body responds to best as well as what stimulates the most muscle growth. If you are just starting out chances are if you have a good, solid workout program that focuses on a lot of compound movements, and most likely the person that developed that program is more familiar with what is effective than you are.
Most programs that I use and recommend have built in periodization schedules. For example, I may put a program together that has a four week program that is primarily focused on barbells. Then after the four weeks, switch to another program that focuses mainly on dumbbells. I’m not a big believer in ‘shocking’ the muscles or the so called muscle confusion, but I do believe that changing your workout on a regular basis is a good thing. It allows you to work your muscles from different angles as well as working muscles that perhaps you weren’t really working as much before.
Another advantage of changing your workouts on a regular basis is that it doesn’t give you a chance to get bored with your workout. If you get bored, then usually intensity vanishes and you just go through the motions. Every four weeks or so is a good timeframe for mixing up your workout.
In closing, effective, muscle building, fat burning workouts incorporate many muscles, are typically compound exercises, and take a large degree of effort and intensity. Any workout that is ‘easy’ isn’t challenging you and won’t give you the results you want.