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The pull-ups secret weapon: Why experts say chin-ups are the fastest route to elite upper-body power

Ditch the complicated gym machinery and master your own body weight to build functional strength, a bulletproof back, and sculpted arms with this timeless movement.
Fitgurú on MSN

Chin-up challenge: The upper body move that builds boulder-like biceps faster than you think

This classic bodyweight exercise is making a serious comeback in modern fitness routines for one simple reason: it works.