Exercise routines can become dull and predictable as we engage in the uniform two-mile treadmill run or 30 minutes on the elliptical. If you’re getting bored of your predictable workout routine, then it’s time to do something about it. Make exercise enjoyable and fun as you dance, kick, spin or crunch your way to a fit body. Last semester, the University of Massachusetts opened its $50-million Recreation Center, along with nine sweat-inducing fitness classes.