why should you change your workout every 4-6 weeks? What changes can be made?

Changing your workout every 4-6 weeks is important because it helps to prevent your body from adapting to the same routine. When your body becomes accustomed to the same exercises, it can become less effective and you may not see the same results.

Changes that can be made include increasing the intensity of your workouts, changing the order of your exercises, adding new exercises, increasing the number of sets and reps, and changing the amount of rest time between sets. You can also switch up the type of exercises you do, such as switching from weightlifting to bodyweight exercises or from running to swimming.