The circumference. Just like other objects.
Answer:
Cheer them up! Try not to bring why they are depressed into whatever you are doing. If they don't want to or just want to be alone, just let them. Everbody wants to be alone sometimes.
Sleep? it works alot it helps the mind relax
B.
Perspiration, or sweating, is the greatest source of fluid loss from the body.
The most important types of exercises that build cardiorespiratory endurance are aerobic exercises, because those get the blood flowing and and the heart pump better.
