That's a shame about your GP, it's disappointing to be dismissed like that, especially if i specialist has suggested them. Out of interest how does the chest strap report on occasions when you're truly smashing it? I didn't actually realise Puma made running trainers, i've never really seen them whenever i've been looking. I quite like reviews on RunRepeat to try and get a base impression of trainers. Was checking out some of the premium features on Strava and turns out it doesn't think much of my current fitness! The two red circles are from when i did the Manchester Marathon and then a half marathon a few months later. I doubt my fitness spiked that much so i'm not putting too much into the graph, but it does highlight areas where i believe i was in a "peak" Jan to April 2020 i was really working on fitness and losing weight so can see why that builds up Then May was my birthday and i dropped off a bit, then got back to some long distance running towards the end of June In August the 3 Towers Ultra was cancelled and i lost motivation for some of the longer runs i was doing. December i then ramped up with motivation ready for an Ultra in February and then January i beat my HM personal record before being plagued with loads of little injuries which leads me to now!