What happens when you reach the maximum speed at the gym and travel back in time.
When people actually looked back in the historical record, they found that those crazy metal outfits keeping the knights' guts protected from impalement were hardly a problem when it came to kicking ass. Yes, the armors were considerably heavier than a regular shirt and pants, but the knights were prepared for that. Take French knight Jean Le Maingre, aka Boucicaut, who left not only a trail of corpses around Europe but also detailed records of his training regime. He would run, jump, climb, and swing heavy weapons while wearing his armor, which we're guessing still reeks of BO.
A bunch of Swiss researchers decided to recreate Boucicaut's medieval Rocky routine and discovered that, while you did need to be in peak physical fitness, it was totally possible to be a superhero knight.
Meanwhile, we got a cramp making this GIF.
While they took the historical records as their starting point, the researchers went a step further and had the armored test subjects take a jog around town, chop wood, and do somersaults, cartwheels, and flips just for the hell of it. They even answered the age-old question: Could knights dance while in their armor? Science has declared that yes, they could.