Toe infections , for instance , can be caused .
Toe infections , for instance , can be exacerbated by dirty socks , specific types of aggressive exercise ( long - distance running ) , tight footwear , and walking unprotected in an unclean environment .
Toe infections , for instance , can be caused or exacerbated by dirty socks , specific types of aggressive exercise ( long - distance running ) , tight footwear , and walking unprotected in an unclean environment .