5 fitness trends that went viral in 2025 — experts weigh hype vs results

An estimated 80% of Americans reported participating in sports and fitness activities in the past year, representing an all-time high, according to a 2025 report.

From TikTok routines to old-school military tactics and high-tech machines, this year's fitness trends promised big results with surprisingly simple moves — but experts say not all gains are created equal.

Below is a roundup of five standout trends from 2025, complete with fitness trainers' takes on each approach.

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