My shoes seem fine though I did tie one too tight yesterday - the one with the bad toe - but I think it's something that's been building up rather than just appear after one run.
Vaseline is good for runner's feet. Tying the laces too tight is often the cause. Sometimes they're laced really tight when you buy them so you might need to loosen them all the way down. Bit of a faff but worth it if they're digging in
Cut your toenails really short - mine grate the neighbouring toes orherwise. And grease 'em up with Vaseline (messy) or Lanacane (more expensive but less messy and works on rubbing seams and chafing) before you put in your socks.
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