When you decide to move a part of your body, your brain transmits the message to your muscle fibers via your nerves. The fibers respond by contracting, which...
Health & Fitness
Heart and blood vessels: Your cardiovascular system transports oxygen to cells and removes carbon dioxide, carries away metabolic waste products, and shuttles...
What goes on inside your body when you pedal a bike or take a stroll? These activities set off complicated physical processes that affect nearly every organ...
We Can Help Children Grow Healthy Brains How your child’s brain develops each and every day is being shaped by the environment and experiences you provide. The...