What is it called when switching between two different forms of exercise

Endurance: increase your breathing and heart rate. They keep your heart, lungs, and circulatory system healthy and improve your overall fitness. Building your endurance makes it easier to carry out many of your everyday activities. Endurance exercises include: walking or jogging, yard work or ranking,digging or dancing.

Strength: Lifting weights

Using a resistance band

Using your own body weight

Balance: standing on 1 foot or Heel to toe walk also Tai Chi

Flexibility: Shoulder and upper arm stretch, Calf stretch and Yoga.

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

im not sure looking for this 2 ik c is wrong