Ankles are often neglected when it comes to your strength-training routine, but they shouldn’t be. Strong, flexible ankles are an important foundation, helping prevent injury whether you’re running back and forth on the tennis court or running to catch the bus. The good news is just a few minutes a day can help keep the sprains away. If it’s been a while since you gave those joints any extra attention, read on for an ankle-strengthening exercise for each day of the week.