Changing your workout can be beneficial. Changing the equipment can also help. Pushing your body to do a new motion, weight, rep, heartbeat, etc. will help mix up your workout.
A new machine on the rise is called the Tread Climber. It has the features of a treadmill, elliptical, and StairMaster. It's soft on your knees and targets your glutes and thighs while getting your heart rate up fast. - Chrissy Strow