The latest obsession on TikTok is the "Winter Arc" challenge, which sees young people get ahead of their New Year's Resolutions. Winter Arc TikTok is flooded with videos of young men and women wearing dark-colored oversized hoodies and athleisure, working out in the gym, or going for early-morning runs. Carly says the Winter Arc is all about being "laser-focused" on your goals, so that you're transformed by the new year. He said it takes 66 days to form a habit, so the Winter Arc helps ease the process of transitioning into your New Year goals. Here are four expert tips to create healthy, realistic Winter Arc goals:

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Persons: Carly, Michael Baah, Baah, Gary Lineker, Ezra Taylor, Tasha Ghouri, they'll, Malminder Gill Organizations: CNBC Locations: British, London