Option 1. The Bulgarian Split Squat is a great substitute for the Squat. You only need a bench or box, and you can use dumbbells, kettlebells or a barbell. The exercise builds single-leg strength, with a focus on the quads. Follow this with the Stiff-Leg Deadlift to work the muscles on the back side of your body.
1 The right passes behind the inferior vena cava, the right renal vein, the head of the pancreas, and the descending part of the duodenum. 2  The right is somewhat lower than the left; it lies behind the left renal vein, the body of the pancreas and the splenic vein, and is crossed by the inferior mesenteric vein.
Kidneys and Protein. Kidneys are bean-shaped organs in your lower back -- one is on your right side and one is on your left. Nephrons are structures inside each kidney that contain tiny tubes called glomeruli. These glomeruli are responsible for filtering your blood to remove waste products and fluid to produce urine. Kidney damage allows protein to pass through the glomeruli and move into your urine.