All of the above is the answer!
The answer would be Red Blood Cells
I only have an idea for number two right off the top of my head, sorry.
2: You should develop your own exercise program because not all exercise programs will be good for you, your body type, and your fitness level. When you make your own, you can design it to fit your personal needs.
I'm not entirely sure why holistic treatments would be controversial in animals. Perhaps what makes them controversial is the fact that we tend to assume we know what makes them holistic and how they will be holistic for the animal - this isn't necessarily the case, as we can only make a good guess about it.
Usually these painting are made on birch trees because the bark has a much smoother surface compared to bark such as an oak tree.
<span />