This running game is strange!!

[Bazza1234]

A couple of weeks ago I ran a HM at an average 6:40 mins per K. This morning I struggled to run 4K at 7:20 mins per k !!! I had a flu injection on Sunday - haven't felt any side effects but wondering if??????

[PippiRuns]

Flu vaccines cause antibodies to develop in the body - it takes about two weeks from the time of vaccination for the process to be completed. So what you are experiencing is probably just natural tiredness due to the fact that your body's immune system has been put to work.

[Bazza1234 Graduate10 in reply to PippiRuns]

Thanks for that info.

[Millsie-J]

There were a couple of similar post in our flu season Bazza. Its likely to be as Iben says.

Good to get the jab though! 👍🏼

[JaySeeSkinny Graduate10]

Our bodies are odd things though. Sometimes it's a real slog and at other times, although you're feeling exactly the same, it's the same time of day etc, you'll suddenly be a lot faster.

I'm beginning to think winter slows me down.

[Hidden]

Winter definitely slows me down too. Don't underestimate the effect of that jab. Also remember the difference between running alone and running at an event. All sorts of factors could be at play

[ancientrunner Graduate10]

Would put it down to the vaccine.

[RunningS Graduate10]

I had a run like that last week (no flu vaccine to blame), where it was a miserable slog to get round what is usually a comfortable route. I put it down to interrupted sleep the night before and thankfully things are back to normal this week...