Which western runners are doing double threshold sessions? Obviously, the Ingebrigtsen's, but after that, are any of the other successful western runners doing this? I know Wightman doesn't, neither do Oli Hoare, Laura Muir, Josh Kerr. I'm not saying the double threshold wouldn't work for more athletes but there's different paths to success. For the 1500 guys, there's definitely been more emphasis on getting stronger over-distance though that hasn't meant going down the Ingebrigtsen route.