To safely start a new exercise program, one should follow a few essential steps. First, it’s important to consult a healthcare professional before beginning, especially for those with existing health conditions. Gradually ease into the program by starting with low-intensity activities, allowing the body to acclimate. Set reasonable and attainable goals to stay motivated over time. Additionally, focus on a balanced routine that includes aerobic exercise, strength training, and flexibility work. Finally, listen to your body and adjust the program as needed to prevent injury and ensure sustainable progress.