The sentence that is most precise regarding the benefits of physical activity is, option C. The jeopardy of injury and sudden heart attack during physical activity outweigh the benefits of being active for older adults. Physical fitness is even highly enheartened for older adults for many benefits that aims at reducing the peril of chronic diseases.
Measure your heart rate before, during and after work outs and write it down. Monitors can be worn as a strap across the chest, on the wrist and even on the head, and by measuring your heart rate can help you exercise at the right intensity. Most don't have a display, so you'll need to connect your monitor with a sports watch or smartphone app to see your heart rate.
Good conductors of heat- aluminium, Iron, Lithium, Beryllium.
poor conductors- Mercury, Hydrogen, titanium, Chromium
