Movement Patterns vs Individual Muscles

If you wanted to learn to be a better driver. Would you get in your car. Start it up. And press the gas pedal for 3 sets of 10?

If you want to look, feel and be stronger Start with improving your movement quality instead of focusing on groups of muscles.
The former will raise the ceiling on your ability to gain the latter. Think big picture.

Pressing the gas pedal faster, harder or more is not going to make you a better driver. Likely worse. (looking at you MD tags)

Like it or not, driving is more about dealing with the environment - weather, road condition, other drivers etc. And unless you're on a quarter mile track, there's much more to it than going as fast as you can and stopping. Your ability to receive, process and act on information is what's going to improve your driving skills.

How does this apply to training?

Our bodies are more complex than driving dynamics but share some core principles. Improving movement quality i.e. range of motion (mobility) and control over the full range (stability) gives us the opportunity to get into better positions to receive, process and act on information.

Input safety (control) - output strength>speed>power.

No one muscle acts alone, in ANY movement. The movement patterns we perform in life, sport, training involve a series of muscles acting in concert - think symphony orchestra.