Wearing knee pads when working out does protect your joints, but what do you mean when you wear them to frog hop?
Resistance bands, also known as elastic bands, are used for strength training exercises. Although resistance bands come in different shapes (some with grips) and lengths, they are essentially giant rubber bands that you pull to strengthen certain muscle groups.
The earliest medicine balls were probably used by ancient persian athletes to increase strength and endurance. These early ones used at least 3000 years ago were usually sand-filled animal bladders. You will find references in later texts to the use of medicine balls advocated by hippocrates, the father of medicine, about 2500 years ago. He recommended the use of round animal skins, which could also be filled with sand, as a way of training athletes or helping them recover from injuries.
I have been playing soccer for more than 6 years, in my opinion, our country's amateur soccer field, because of the poor quality of the turf, in addition to tf (broken nail) spikes, wearing other spikes are like "On stilts". It is easy to slip, not to mention that, like soccer, such a fierce confrontation, fast walking and stopping sports, the choice of improper spikes, is irreversible damage to the knee.