Regular foot fins make you kick from your knees, not from your hips. This is not the proper way to kick. When you kick from your knees, your thighs slope down in the water and cause drag. You also feel the strain from using your calf muscles too much. Watch people swimming with foot flippers to see how they make you drop your thighs too low, and kick from your knees rather than your hips. That is the style of kick that foot flippers require to work but it is not like good barefoot swimming.
In fact, these problems are also common if you are learning to swim with or without wearing foot flippers. Often, it is very difficult to kick from your hips. No matter how hard you try, you can’t manage it for very long. It is difficult to get rid of bad habits, sinking your thighs and knees too low in the water and kicking from your knees. Foot flippers can really make this problem much worse. If you have used them, they may even have caused your bad habits in the first place.
Now you can have fins that give you extra speed and guide and strengthen a powerful kick from your hips!
See related faqs about using the larger muscles in your thighs, buttocks, stomach and torso and constant speed throughout your entire kick.
See all faqs about why hip power fins are the best for swimming.