How to perform a plank

Place forearms on the floor with elbows aligned below shoulders and arms parallel to your body at about shoulder width. If flat palms bother your wrists, clasp your hands together.

Explanation:

Your arms should feel engaged, but comfortable—not as if they're about to give out.

2. Doing a plank may target the abs, but your legs should feel a little burn too. If they don't push back through your heels and push the balls of your feet into the floor

Explanation:

to prevent people from getting the ebola virus, countries around the world paid to doctors develop a new vaccine. now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

what is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the ebola vaccine?

meditation is a practice of sitting still and quiet for minutes or even hours. it has been practiced for thousands of years and is even a part of religious practices for some people. carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that people connect with their current surroundings and activities.

are claims about the effects of meditation most likely scientific or pseudoscientific?

not pseudoscientific, because people have made claims about it but scientific observations have not been made

the answer should be true