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 best thing about these exercises is that you only need some dumbbells, a barbell and your own body weight. One Arm Dumbbell Rows. This is a fantastic exercise for building overall thickness in your back and targets the latissimus dorsi, rhomboids, lower traps, and the erector spinae.This is one of those great âbang for your buckâ exercises that you can always rely on for packing on muscle mass to your upper body. Bent Over Barbell Rows.After the deadlift exercise, this is the âgo toâ mass builder for your back. Make sure to use proper form on this movement since form and technique is of the utmost importance.tâs much better to use a lighter weight in order to place all of the emphasis on the muscle group being targeted and to ensure your overall safety. Pull-Ups. Yes, I did include a bodyweight exercise into the mix of the best mass builders for your back.