Lifting extremely heavy weights or pushing your muscles to their absolute limit every day or almost every day can quickly make you stronger. This happens because your nervous system and muscles adapt to the heavy stress, giving you big strength gains without needing to spend hours in the gym.

Doing just one set of strength exercises a few times a week can still build significant muscle strength and improve daily physical function, whether you are new to working out or already experienced. Cutting down on the number of sets does not stop your muscles from getting stronger as long as you are working the big muscle groups.

Lifting heavy weights at least twice a week, doing full movements for a few sets each time, and doing it early in your workout can help healthy adults get stronger compared to not exercising or doing other types of training.

Lifting heavy weights until you can't lift anymore makes young male athletes much stronger than lifting lighter weights over 8 weeks, showing that heavier loads train muscles and nerves better.

Doing a lot of reps with lighter weights right after each other makes your legs feel way more tired right after than doing fewer reps with heavier weights.

Doing lots of reps leaves your muscles weak for days, but doing fewer heavy reps doesn’t make you weak for long.