

If you’re warming up for a workout, 5 to 10 minutes of dynamic stretching is plenty. If you’re stretching to relax, 10 minutes is probably the minimum, as it can take time for your body to calm down enough for your muscles to relax. Increasing flexibility via stretching methods like PNF and isometric can be more time-consuming because they cycle through periods of contracting and stretching. But 10 minutes should be enough time for you to work on one or two joints.