I sprained my ankle 5 days before a holiday. It was a pretty bad sprain. I have sprained the ankle before and it took 2-3 months to heal. After it was healed all flexibility was lost. I found the HEM system online and was a bit skeptical. I thought it was worth giving a try as I had only 5 days before the holiday. To my amazement my ankle healed in record time. I was able to do all the activities on holiday including water skiing which is very intense on the ankles. I highly recommend this product to anyone. Thank you for providing such incredible information