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1
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3answers
71 views

How to develop sensitivity of hands and arms?

I want to develop the sensitivity of my hands/arms particularly for tennis. I feel this is essential to get more controlled spins. How can I develop sensitity of hands/arms?
3
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5answers
754 views

How does one “grind down” calluses?

I love having hardened calluses- except when they rip! A while back, I had a callus on each hand rip open whilst doing Parkour. I was told to "grind down" my calluses every once in a while. By this, I ...
2
votes
3answers
401 views

How do you do knuckle pushups without injuring yourself?

This question is primarily addressed to those who have done knuckle pushups consistently for several years. I've been doing 100+ knuckle pushups for about two years everyday, and I've developed ...