If you are a martial artist or just a person who is interested in combat sports, you already know the importance of being able to hit hard.
Even if it is not just as important as having a higher punching speed, be able to hit hard is one of the best attributes you can have in combat and self-defense in general. You can also buy an everlast punching bag via https://boxingroyale.com/fr/boxe/sacs-de-frappe.html (which is also called ‘ sac de boxe everlast via https://boxingroyale.com/fr/boxe/sacs-de-frappe.html ’ in French).
The first myth that surrounds to hit and be able to hit hard is that you have to be very strong in order to hit hard.
It's totally wrong and I have seen the evidence several times. Now, do not misunderstand me, if you are a big guy and you are very strong, there is a very high percentage of chances that you can hit hard and potentially knocking someone.
But the most important aspect of fist striking is actually your punching speed. The physics showed that when you double the amount of your speed, your power becomes 4 times larger, compared to the doubled of your weight where the power is only two larger.
But the most important aspect beyond speed is actually your technique. Different martial arts use different ways of generating power, but what they all have in common is that they have their power to rotate the body in the right way.
Ideally, you want to rotate your body in a way so power starts all the way from your feet, browse your hips where they earn an extra momentum, get your shoulder, elbow, cross your wrist and finally come out of your shot. Fist delivers an extremely powerful punch.