Q After a run, I get an intense hangover-type headache that can continue for two to three days, even though I take the usual pills. I don’t drink alcohol or coffee, I drink isotonic drinks when I’m training and racing, and water the rest

foods to ensure adequate mineral intake. Also do not completely eliminate salty foods from your diet. These will help to ensure you have adequate electrolytes to balance fluid losses each day.—Joe Beer, sports scientist and level two triathlon coach

in the 30-60 minutes before training to ensure that you’re properly hydrated before you start. Once you’re running, sip 150-200ml every 15 minutes. If you’re still thirsty afterwards, or failed to drink during the session, another 400-800ml may be required.—Joe