I have to tell you, I have battled with tight calves for a long time and some of the problems I have had while running come from that. I recently tried the prostretch at my gym and I love the results. so much that I went out and bought one for home use. I have seen a big difference in my calves since using this I would recommend this to anyone that suffers from Achilles tendonitis, plantar fasciitis, and pulled hamstring