Speaking to Phillip Schofield and Holly Willoughby, Dr Sara said: “Lots of people out there suggest getting ‘cold therapy’, so jumping into an ice bath, and that it might improve mental health, the immune system, that it may make you feel much better.
“These studies are fairly small.
“Having said that, with regards to weight loss, when we are cold we have to find a way to generate heat.
“We have these powerful cells called mitochondria that live in our brown fat cells that are in our neck, collar bones and along our spine.
“Those little powerful cells uses glucose to break it down into heat, to warm up our body,” she added.