’Heavy’ or ‘light’ is a matter of personal preference as long as you’re lifting.
Both lifting heavy and light have a ‘downside’:
High reps with lower weights are painful, they burn & you run out of breath. You may stop at 15 reps when you could actually do 20 reps which are the ones that really count. Plus, you may feel overly exhausted after training with higher reps…
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Heavier weights with lower reps are HARD & require a certain level of skill to perform safely. There is a mental game to ‘lifting heavy’ as well, your mind may not think you can lift as much as your body actually can, so you miss out on the added load that will build your muscles.
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So ‘pick your poison’ where weight lifting is concerned, just make sure you do so with maximal EFFORT whichever route you go…
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AND…workouts don’t have to last hours, you can mix up the heavy/light combination to reap all the benefits that resistance training provides.
Happy to help you get YOUR resistance training in, no matter if you enjoy heavy or light lifting – I can provide accountability, programming or both! Let’s talk: http://lifestyle.shawna247.com/
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https://pubmed.ncbi.nlm.nih.gov/35015560/
https://pubmed.ncbi.nlm.nih.gov/37414459/
https://pubmed.ncbi.nlm.nih.gov/37385345/
https://pubmed.ncbi.nlm.nih.gov/28834797/
https://pubmed.ncbi.nlm.nih.gov/25530577/