Before starting a new exercise routine, several considerations are essential. First, assess your current fitness level to choose appropriate activities. It's critical to set realistic and measurable goals to maintain motivation. Additionally, consider any existing health conditions or injuries that may affect your ability to exercise safely. Incorporating a variety of activities can help prevent boredom and injuries. Finally, consult with a healthcare professional or fitness expert if you're unsure where to begin or need personalized advice tailored to your individual needs.