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did a longish (20+ miles) run in the sun recently and thought I'd drunk enough (PSP 22) - but ended up quite light headed and suffered a little bit.
Got me thinking re advice re whats the best fuel for ultras - especially in the hot weather. Next race is July.
Should I try the zero cal electrolyte drinks tabs - are they better at rehydration. Can't get my head round zero cals when I need calories and more calories on the run? Should I split my refuelling from my hydration and is combining them actually detrimental?
Are there formulations/drinks that are better for ultras - carbs, calories and electrolytes - especially for higher sweat loss.
Is the light headedness purely hydration or is it minerals potentially? I've suffered a couple of times in hot runs and sure I'd taken in enough liquid.
Any advice, thoughts?