Just being active should be good enough to maintain and build your fitness level—right? Actually, your muscles want a little something more from you to become their best and strongest. What they want is confusion—muscle confusion, that is.
Muscle confusion is simply doing different things with different muscle groups to create challenges and therefore newfound levels and areas of strength. It helps you from becoming stagnant in your fitness, and is often referred to as cross training. Cross training might be exercise types, or it might be varied options within a certain time period.
What cross training does, though, is pretty remarkable. It builds your strength, of course, but can also lead you away from getting bored, and then abandoning, a workout program.
There are lots of cross training, muscle confusion options. This graphic provides a good place to start. Infographic source: (http://www.clubwoodside.com/cross-training/)