What guidelines are given in regards to intensity and frequencyto improve flexibility?

To improve flexibility, it is generally recommended to engage in stretching exercises at least 2-3 times per week. Stretching should be performed at a moderate intensity, where discomfort is felt but not pain. Each stretch should be held for about 15-30 seconds and can be repeated 2-4 times for optimal results. Incorporating a variety of stretches targeting different muscle groups is also beneficial for overall flexibility improvement.