Rhonda Patrick· PhD
You don't need to lift heavy weights to gain muscle. As long as volume and effort are high, and you train to fatigue, you can build muscle mass (hypertrophy) with lower weights.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
You don't need to lift heavy weights to gain muscle. As long as volume and effort are high, and you train to fatigue, you can build muscle mass (hypertrophy) with lower weights.
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there are a lot of people um a lot of older adults women that have been scared of of lifting because of the like Oh no I got to lift heavy and I'm going to injure myself I'm you know I'm I might bulk up too much but like it does give you know once I found out it was like you don't have to lift heavy you just to put the effort in fatigue yourself