BBC Earth (Asia) - - Science -

An hour-long soak in the tub might seem like the most seden­tary pas­time imag­in­able, but ac­cord­ing to re­searchers at Lough­bor­ough Univer­sity, it’s more stren­u­ous than you might think.

A bath at 40ºC will raise your core tem­per­a­ture by 1°C. This stim­u­lates your body to re­lease

shock pro­teins to pro­tect against the heat. This meta­bolic

ef­fort uses up blood glu­cose.

If you spend that hour cy­cling in­stead, your core tem­per­a­ture will rise by the same amount. But the bath is ac­tu­ally 10 per cent more ef­fec­tive at low­er­ing peak glu­cose lev­els.

Ul­ti­mately, cy­cling

burns more calo­ries than bathing, but a hot bath still uses 126 calo­ries per hour, which is as much

as a 30-minute walk. Or do­ing 40


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