The best way to increase flexibility is through consistent stretching routines that include dynamic and static stretches. Dynamic stretching, performed before workouts, prepares the muscles for activity, while static stretching after exercise helps lengthen and relax muscles. Incorporating activities like yoga and Pilates can also enhance flexibility by focusing on controlled movements and full range of motion. Gradually increasing the intensity and duration of stretches is key to safely improving flexibility over time, preventing injuries, and enhancing overall performance.