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The Independent UK
The Independent UK
Sara Keenan

MYSTERIOUS: What is tiktok s 75 hard challenge and could it change your mindset in 2025 | Mind Blowing Facts

As a new year begins, a familiar fitness trend is once again dominating TikTok algorithms. This year, the '75 Hard' challenge leads the charge, with popular variations like '75 Soft' and '75 Medium' swiftly following.

Paddy McGuinness showed off the results of a 75-day fitness challenge in an Instagram video and post to his two million followers on Saturday (10 January).

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