The classic zombie being re-animated dead were generally slow and not agile factoring in decomposition and muscles losing their elasticity.

Modern "Zombie" movies and shows have taken a few different routes. In cases like 28 days/weeks later, world war z, and the ladt of us. It's a viral/parasitic/fungal infection taking over the host leaving the body largely intact and functioning.

Theoretically in these cases the invasive species could override our built-in limits like ignoring pain to push the host to exteremes for longer periods.

What everyone else said about them being fake so it doesnt matter is true but there's reasons behind the fiction.