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Showing 49 to 60 of 91 articles · Most recently verified first
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No, the 'muscle bound' idea is a myth. Full range strength training with real load improves flexibility about as much as stretching does; a 55 study review found no difference. Two conditions attach: train through a full range, and use external load, not just bodyweight.
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No. A Cochrane review found stretching before, after, or both changes muscle soreness by about half a point on a 100 point scale, too small to feel, and a separate pooled analysis found a cool down stretch did not speed recovery. Gentle movement, massage or cold water help a little more.
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Free weights and machines are different tools. The cited review did not detect a difference in muscle growth in its direct comparisons; this is not proof that every programme produces identical results. Strength outcomes depend partly on the exercise tested. These findings do not establish that either option is safe for unsupervised training near failure or for exercising through an injury.
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Full-body and split routines can both fit a training plan. When weekly volume is matched, the cited review found no clear muscle-growth advantage from higher frequency. Choose a manageable schedule, not a universal twice-weekly rule.
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Across the trials, a full range of motion tends to build more lower body muscle and strength than partial reps, and the stretched part of the movement seems to be what matters. 'Lengthened partials' are promising but oversold. A shorter range is a tool for specific cases, not a default.
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For muscle and general strength, rep cadence barely matters across a normal range (about 1 to 2 seconds up, 1 to 3 down). Deliberate super slow reps are worse, 'time under tension' is not a target, and lifting with intent to move fast has a thin, inconclusive evidence base.
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Strength and muscle-size measurements can change at different times. Small studies provide examples, not a universal six-to-ten-week growth deadline. They do not establish when other people will notice a change or how long an individual's beginner phase lasts.
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No fixed number. Most people training hard need one or two easier or off days a week, and should not train a muscle hard two days running. You can still train daily by rotating muscle groups or alternating hard and easy sessions. Never resting risks stalled progress, not overtraining syndrome.
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For health, the target is 150 to 300 min of moderate cardio a week (or 75 to 150 vigorous), plus strength twice weekly. The biggest return is the first slice: going from almost nothing to a modest amount roughly halves mortality risk. It need not be a workout.
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Genetics contributes to differences between people, but a population estimate for strength does not tell you what percentage of your own muscle growth is genetic. Training responses vary; a plateau cannot be diagnosed from these studies.
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More protein helps you build muscle from training, up to a point. Pooled analysis puts that point at roughly 1.6 g per kg of bodyweight per day, with wide individual variation. You can usually reach it from food; a supplement is a convenience, not a requirement.
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More challenging weekly sets tend to produce more muscle growth, but there is no proven universal optimum. This article explains volume, frequency, load and effort without turning an editorial starting range into a prescription.
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