What is the ‘Winter Arc’ challenge’? Is the viral trend healthy or harmful for you?

TikTok users are embracing the “Winter Arc” challenge, a 90-day personal development trend popularized by influencer Carley Berges. This challenge encourages focusing on health, fitness, and mindfulness goals during the last three months of the year. Experts suggest it can foster healthy habits and combat winter blues, but caution against blindly following generalized online advice.