No pain, no gain, no idea what half these terms mean.
The practice of getting intoxicated or partying during intermissions at sporting events or other entertainment, essentially pre-gaming the second half. It's drinking between drinks, really.
Using tools (foam rollers, massage guns) to apply pressure to muscle and connective tissue, because apparently muscles need their own massage therapist now.
The nervous system's process of activating muscle fibers to produce force—more technical way of saying 'making your muscles work harder.'
The fatty sheath insulating nerve fibers, increasing signal speed. More myelin = faster neural communication = better strength and power output. It's why practice makes perfect.
A single nerve fiber and all the muscle fibers it controls. Recruiting more motor units = more force production. It's why you scream when lifting heavy—recruitment increases.
The elevated dirt platform where a pitcher stands during a game—basically the mound that separates the merely athletic from the genuinely brave. It's where grown adults throw hard spheres at other grown adults holding sticks.