My last 2 runs have involved bits of walking when I hadn't planned to walk, feeling defeated and knackered and Too Blooming Hot. Any advice for running in the heat? I'm not keen to get up at a ludicrous hour and can't manage without breakfast, so need time for food to go down. I'm a bit nervous about being a woman running on my own late in the evening (though perhaps this is paranoia?). What should I do?