What's something that's not common knowledge but you think everyone should know?
Lianrepl@kbin.social to 
Specifically thinking of stuff that make your life better in the long run but all kinds of answers are welcome!
I've recently learnt about lifetraps and it's made a huge positive impact on how I view myself and my relationships
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The power in your punch comes from your legs.
Explain please.
The strength behind your punch is in how you pivot your feet and twist your torso, not from your arm or fist itself.
I'm sure you're right, but I have so many questions now! Doesn't that depend on the technique I use? Like what if I neither pivot my feet nor twist my torso? What about punching in different directions, for example upwards? I've been punching the air around me for a full minute now.
It's partially but not entirely true. Having correct technique in your upper body matters too, as does accuracy, timing and the ability to create collisions.
All else being equal in terms of technical skill and leg strength, the guy with the bigger arms, fists as shoulders will have a stronger punch.
I had a ton of muscular atrophy in my right upper body due to a bulging disk in my neck --since corrected by surgery-- and I definitely noticed a huge diminution in my striking power, as did my regular sparring partners at the gym. So it definitely does matter.
I'm doing better now, but still not back to 100 percent and probably never will be. But that's OK since I'm pretty old anyway.
They explain the physics of it pretty well here, I think https://m.youtube.com/watch?v=LNfAwWk33nI&t=1m25s
What if I sit down and punch downwards ?
And everyone should know that, because ??
One day you may find yourself in the same room as a wheelchair bound 101 year old Henry Kissinger
Heaven doesn't wants him and hell is afraid to have him. Only reason he's still alive and kicking.
Oh god forbit. I agree. Everyone should know how to punch properly and with force.