TikTok’s "Great Lock-In" Trend Is 2025’s Answer to the Winter Arc. But Do We Need Another Glow-Up Challenge?

Is the answer really to lock in, or would we be better logging off?

I’ll admit it - my default reaction to viral wellness trends is usually an eye-roll. As a Health Writer, I’ve seen more than my fair share of glow-up challenges promising life-changing results, only to serve up a cocktail of restriction, unrealistic goals, and diet culture disguised as discipline.