afaik the general rule is that you want to be able to do about 8 reps and at the end you should be absolutely unable to do another rep (but you have to be careful to not hurt yourself, injury kills the gains)
also important is resting afterwards, you need to feel the delayed-onset muscle soreness or you ain’t building jackshit muscle, and it’s okay to do light exercise while feeling it but it’s easier to injure yourself while the muscles are recovering so wait until it passes before you do another workout pass.
afaik the general rule is that you want to be able to do about 8 reps and at the end you should be absolutely unable to do another rep (but you have to be careful to not hurt yourself, injury kills the gains)
also important is resting afterwards, you need to feel the delayed-onset muscle soreness or you ain’t building jackshit muscle, and it’s okay to do light exercise while feeling it but it’s easier to injure yourself while the muscles are recovering so wait until it passes before you do another workout pass.