It's basically the percentage of body fat, muscle and bone. You can change it by exercising a lot (cardiovascular in particular), eating less calories (dieting) or just eating more healthy things/ more foods with protein.
Explanation:
I had a question like this on a health/pe test last week
Driving while under the influence could slower your reflexes so you most likely to crash. I'm unsure if i had answer you question or not but that is what i had got.
False. Isometric exercises aren’t recommended for older people or those with high blood pressure, because it can cause the blood pressure to dramatically increase.