because the floor is getting its revenge on you jumping on it so hard!
a soft floor usually has carpet and a hard floor has wood or other things that are hard.
To prevent ankle injuries while using a jump rope, make sure to wear supportive shoes, warm up before jumping, land softly on the balls of your feet, and avoid jumping on hard surfaces. Strengthening your ankles and practicing proper jumping technique can also help prevent injuries.
You don't it's hard!
no seriously
In wrestling Soft floor is provided because in hard floor the time of impact increases as a result the rate of change of momentum increases which means more force and then from Newton's third law the reaction force of floor also increases and wrestler get more injuries and damages.
Home Depot sells hard floor cleaner. hard floor cleaner cleans your hard floor in no time. it cost around 30 dollars but it is really effective. I have bought some myself.
Grass 8 to 11 centimeters, Hard Floor 8 to 12 centimeters, Spring Floor 10 to 15 centimeters
the floor is too hard
(severity) The seriousness of his injury had his family worried that he might die. (solemnity) The President found it hard to maintain his seriousness when pardoning the Thanksgiving turkey.
If it is on hard wood floor spit on the floor and rub your shoes in it to get a grip on the floor.
Seriously? 20 million man hours of hard slog and testing,testing, testing.
The floor is very hard.