VIVAMAYR, ALTAUSSEE, AUSTRIA

Everyone knows why you go to Vivamayr: weight loss, though the gut reset is a happy bonus. But its Altaussee location, in the Austrian Alps, has other benefits, too. The medical team is devastatingly charming, even when recommending a 10-day fast; the star London facialist Teresa Tarmey has a clinic on site, and the lakeside setting is the perfect Instagram backdrop, even when you feel so weak that you can hardly hold up an iphone. Modern Mayr Medicine is based on the principles of Rest, Cleanse, Train and Substitute – by practising each (usually in a one- or two-week programme), Vivamayr promises you’ll be healthier, happier and more efficient. Low on calories, big on results. ONE WEEK ‘CLASSIC’ PROGRAMME, £2,000; VIVAMAYR.COM