Hi, I am a regular runner 4 times per week, 6 miles each run with a long run at the weekend. I have done a couple of marathons and many halfs etc. After my last couple of long runs, 18 miles and 16 miles,
I have felt cold and shivery, also I feel nauseous and have no appetite. This never used to happen, any ideas what the problem might be? Many thanks Rob.
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I used to have the same reaction after every long run, 20+, and was usually sick after a spell of uncontrollable shivering. Once ended up in the St Johns tent on a saline drip! Slowing down and more water stops have helped.
So this is what I do, it may help. I don't do gels, they aren't my thing. I take a small freezer bag of sugared Haribo in my back pocket. Then I take cut sticks of flapjack in cling film either sellotaped to my waterbottle or in a phone arm pouch (no phone just flapjack).
I don't consume anything until I've passed 10 mile mark. If an 18 miler I'll have some flapjack at 10 miles, whether I feel like I want it or not (whlst running, small chunks at a time), if 22 then I tend to take them at 12 miles. Then I have regular small chunks every 3 miles after that.
It works a blinder, if I'm at 12/13 mile mark after about 20mins it makes me feel like I'm the 7 mile mark. I think it is more important (for me) to take it before I actually feel I need it.
Haribos are just for little spikes of energy, I think they work, probably more placebo.
We are all different though.
Hope it is useful.
Ben
I think it's caused by stress to the gastric system. The body directs blood away form it to the muscles where it's needed most