Free points, I’m alright though I’m busy with homework.
Osteoporosis happens when bone density decreases and the body stops producing as much bone as it did before.
Hope this helps chu.
I'd personally say B because a warmup will reduce injury, soreness, and get you ready. Then you have your exercise. Then the cooldown helps <span>bring the heartrate down to near-normal and to get the blood circulating freely back to the heart. Stopping abruptly could result in fainting or place undue stress on the heart.</span>
D, because your brain is what makes almost all of your organs work.