I am planning on selling a product that helps with knee pain. Just a super simple contraption that will in no way require an extraordinary amount of effort on the user. But I like to be on the safe side. What sort of disclaimer do you guys usually use in order to prevent people trying to email you saying that they got injured and they are suing. Do you right a short "the information on this site is bla bla and people should consult their doctors first before trying any bla bla bla" Any tips would be appreciated. Thanks in advance.