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Reps in Reserve (RIR): How Hard Should You Train for Muscle and Strength?
Learn what reps in reserve means, how to estimate RIR, when to train close to failure, and how to use it to make better workout decisions.
Learn what reps in reserve means, how to estimate RIR, when to train close to failure, and how to use it to make better workout decisions.
Learn how to breathe and brace during squats, deadlifts, presses and everyday strength training without turning every rep into a guessing game.
A 2026 randomized trial compared challenging walking with casual-paced walking in older adults at risk of frailty. Here is what the findings do—and do not—mean.
Starting Strength is a 3-day strength training approach focused on foundational strength. Use it as a starting point for organizing and tracking consistent training.
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