Yup David....Deap Heat is used very frequently. I've even had it at my age
...couple months ago i started playing tennis every day for a couple of hours with a exisitng injury in my ham-string...when it came to the quater finals of a tournament i had to use the stuff....oooo the smell it makes! it's horendous :? But it definitly helps, it's supposed to sooth the muscle and keep the warmth in!