I've always followed this advice. Indeed, I have just done so. I often find running with a head cold helps to "clear me out". The exercise of my lungs seems to help them fight off the cold. But inevitably some of this is what your mind is telling you. Generally at my advanced age (67), I find that my body is quite good at telling when I can run and when I shouldn't.
I've run for over 18 months in my ASICS Gel Kayano 18s - which suit by running gait very well. Since they're are pretty expensive to replace (but are now getting close to the end of their working life after 1000+ miles), I don't know whether just to replace them or whether the 19s are an improvement. Does anyone have any experience of comparing their performance, please?
I keep getting adverts for the Speedcross 3 & 3CS. I do a lot of trail running on mixed surfaces, often with quite a lot of mud & water, but also on hard lumpy surfaces. I'm in my early 60s & have problems with my right heel & back of the ankle and left ankle. I'm currently using a Salomon XA Pro 3D ultra, which is great on heavy ground but I can feel my heel/ankles on hard ground, and Asics Gel Trail Sensor 5 for when the whole course is hard, but not when it's muddy. I'd welcome any views/experience on whether the Speedcross might help.