How are repetitions related to weight training for endurance?

The lighter the weight, the more reps you will be able to lift it for. The heavier the weight, the fewer reps you'll be able to lift it for. Obvious, I know.

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So, as you can see:

Lower reps (high intensity) is most ideal for increasing strength.

Higher reps (low intensity) is most ideal for improving muscle endurance.

i'm pretty sure questions like these aren't allowd.   but, sure.   i can and talk : ))