How often should you change up your workout routine?

Is it good to change up your workout routine ? The answer is "yes" , because changing your workout routine can prevent exercise overuse injuries such as body pain and muscle cramps. By switching up your routine can allow time to recover ,heal and strengthen. Do not allow a familiar routine become a permanent one , switch it every couple of months or once you start feeling the exercise routine is no longer challenging. How often should you change your workout routine? In approaching of changing your workout routine ,it is advisable to change your workout routine every 12 weeks in order to avoid plateau says personal trainers. But as a newbie, it is advisable to stay consistent with a workout plan for about 15 weeks before starting to make changes in your workout routine.the reason is that ,as a complete beginner in workout, it's important that you get your body to adjust and adapt to your workout routine...