The average life of a human red blood cell (erythrocyte) is 120 days. In humans, erythrocytes (red blood cells or RBCs) are functional on average 120 days.8 people found this useful. normal healthy white blood cell lives for approximately 12 hours. Whereas a healthy red blood cell lives for about 90 days. Although blood is produced from healthy bone marr â¦ ow and constantly producing new red and white blood cells.
The main muscle targeted by the dumbbell shoulder press is the anterior deltoid, or the front shoulder. To a slightly lesser degree, the exercise also hits the remaining deltoid muscles, including the lateral deltoid, or the outside of your shoulder, and posterior deltoid, or the back of your shoulder.
The military press is one of the best old school shoulder building exercises and forms the cornerstone of many good shoulder workouts. Set up for the military press by loading the weight you want to use on a barbell. Stand facing the barbell with your feet at around shoulder width apart. Grasp the barbell using a overhand grip (palms facing the floor) with your hands at around shoulder width apart.