Chest, back, legs, biceps... Understand how each muscle works to build it better. Anatomy, hypertrophy, fast or slow fibers: the theory behind your gains.
5 guides published in this silo.

Stop skipping leg day. Here is the exact plan, exercises, sets, and reps to build legs fast, with concrete numbers you can use today.
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Stop wasting time on crunches. Here is the exact plan to build abs: real exercises, concrete numbers, and a timeline that actually delivers.
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Stop spinning your wheels. Here's exactly how to build chest — the right exercises, sets, loads, and overload logic that actually delivers results.
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Want to build back thickness and width? Here's exactly how to train it—exercises, sets, reps, and an 8-week block that actually works.
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Build glutes with the right exercises, real load targets, and a weekly plan. Sets, reps, and progressions that actually deliver results.
Read the guide →Karney, the workout tracker: 1,500 exercises with GIF, adapted programs, PR tracking. Free, no ads.