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 primary muscles used in your bench press workouts are the pectorals (chest) and triceps (back of the upper arm). Bench presses and similar lifts, such as incline or decline presses, call on the pectorals and triceps to work in unison, driving the weight upward from your chest. Because the pectorals are stronger and call on the triceps during presses, itâs important to work the press lifts first and isolate the arms after.