Every new year comes with big intentions — and the quiet fear that I'll end up doing exactly what I did last year.

A photo-led look at Karol Rosalin, the fitness influencer dubbed the 'perfect woman', whose Instagram fame and £200 bottled sweat have sparked debate about beauty, branding and hustle culture.

Karol Rosalin, 29, is a model and fitness influencer from Brazil who has started flogging bottles of her sweat to blokes ...