So the advice we give to all pregnant women during pregnancy is to try and avoid getting too hot, whether it's just during exercise or swimming in a warm pool.

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To address these questions, scientists from China and elsewhere are rushing around the oceans from ice-cold polar regions to the Indo-Pacific Warm Pool, the warmest marine waters in the world.

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It will be part of a number of high profile sporting facilities being set up in the ISV including a 50m international pool along with a 25m warm up pool which is underway at the site.

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It boasts an eight lane 50 metre competition pool alongside a 25 metre training and warm-up pool.

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Heat waste captured from a local crematorium will be used to warm a public swimming pool in the town of Redditch, England as early as this summer.

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But then it swept over a pool of unusually warm water in the Gulf of Mexico.

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After you have torn up its 120-plus runs, warm up in the Delta's heated outdoor pool with indoor entrance, three outdoor hot tubs and a sauna.

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The lap pool has no lane lines painted at the bottom (Root wanted the area to look like fun and not work), and the water atrium, which features a warm whirlpool on the top level and a waterfall with a cool plunge pool beneath, was also his brainchild.

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We cooled off with a quick dip in the rock pool's icy waters and the blistering afternoon sun was quick to warm our shivering bodies when we emerged.

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