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.
Close Grip Press: A close grip tricep press using dumbbells works the triceps well, especially the medial head. To begin, form a tabletop position by planting your feet in the ground, resting your upper body on a chair and forming a parallel line with the floor through your upper body.ricep Dips: A tricep dip exercise specifically emphasizes the lateral head of the muscle. To perform, begin with your arms extended holding onto a chair to support your bodyweight. Bend at the elbows to lower yourself downward as you keep your chest straight up and your elbows close to your sides.