It's 3am on the night before the final stage and I'm sobbing into my sleeping bag. Like every other night, I'm struggling to sleep because the blisters on my feet are so painful. With only one 17K stage to go, I should be feeling confident that I can finish but I'm in so much pai...

evaporation, in the form of sweat, to cool us down. "Our circulatory system is like a radiator to dissipate heat," says Dr Dominic Micklewright, a sport and performance expert at the British Association of Sports and Exercise Sciences. Sweat is mostly water

to have two weeks to acclimatise but it's expensive. One group arrived six weeks ago but most pros arrive at least two weeks before to get used to the heat.TW: How does Hawaii differ to other IM races?SN: Obviously the format's the same but this is Ironman

110% Juggler Knickers, £110Alison says: If, like me, you’re way too wimpy to plunge tired limbs into an ice bath after training, this new range of compression kit from 110% offers a great alternative.These wonderfully named Juggler Knickers come

The sun’s finally out, which means it’s time to turn up the heat on your triathlon training. To guarantee you taste race success this summer, we’ve put together a series of training newsletters that combine to create an essential guide to the sport

with freeze-dried food at breakfast and dinner. I tried not to cross the fine line between training hard and becoming injured. I also tried to simulate the conditions I'd face in the desert, but it's hard to train for sand dunes and 40+ degree heat in central

Marathon to the Greek capital. The heat and hills haven’t changed over the years though so be prepared for a tough challenge. www.athensmarathon.com © Getty Images Medoc Marathon Red wine or Lucozade? Foie gras or yet another energy gel

and are caused by the heat that builds up from friction or pressure. "Moisturising the skin before a run may reduce friction and lower the risk of blisters forming," says Kershaw. If you're blister-prone, you could also apply a lubricant such as Vaseline

Dr Roger Henderson, a GP and marathon runner. Henderson does issue one warning: "Male marathon runners do not appear to have reduced sperm counts, although exercise that consistently heats the testicles, or which requires very tight-fitting shorts

-supported race passes through a dynamic metropolis of famous plazas, great monumental buildings, such as the Kio Towers, and stunning parks including the Casa de Campo. The race may be in April but be prepared for heat and humidity as well as challenging hills