Is your exercise routine predictable? Do you hop on the treadmill, set the same resistance and workout for an equal amount of time each day?
If your doing the same exercise routine day in and day out, it is time for change. A regular fitness regimen that lacks variety could set you up for failure.
By switching your fitness regimen every month you will help guard against injury, keep yourself from getting bored and increase the challenge.
To help eliminate boredom from your workout, make some changes. Change the number of repetitions on a weight training routine or the intensity of your cardio. Also change the order of your exercise or increase the number of sets. Trying using new machines. Explore your options.
Just remember, to get the best results from fitness and stay on track you should change your fitness regimen regularly.