If you look closely at the cortex and medulla, you can see many tiny, tubular structures that stretch across both regions perpendicular to the surface of the kidney. In each kidney, there are one million of these structures, called nephrons. The nephron is the basic unit of the kidney. It's a long, thin tube that is closed at one end, has two twisted regions interspaced with a long hairpin loop, ends in a long straight portion and is surrounded by capillaries.
Improves Coordination. Jumping rope actually improves your coordination by making you focus on your feet. Whether or not youâre paying attention to them, your brain is aware of what your feet are doing.
Jay Says: Try jumping rope for 3 minutes straight and rest for one minute, then start the cycle again, 3 min, rest 1 min. Do that for 30 minutes 3 times a week. You will burn a minimum of 300 calories per session. The problem is people jump rope for 30 min, burn 300 calories and then have a 600 calorie lunch.