It depends on what blood cell you are talking about.A red blood cell lives at about 120 days.A white blood cell lives at about 13 to 20 days which is the time where the lymphatic system destroys them.Lastly,platelets live 4 to 10 days.I hoped I answered your question clearly!:D. 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.
Elliptical machines target the lower-body muscles, specifically working the quads and hamstrings. This exercise provides more quad engagement than walking, working out on a treadmill or spinning on a stationary bike, according to Ben Greenfield of Champions Sports Medicine.
For example: Crunches only work the front of your abs and donât create a very strong contraction, since it's just your own body weight youâre working against. The ab crunch machine that you sit in at the gym mostly just makes your hip flexor (or your sitting muscles) work hard and not your stomach.