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• Muscles make up 40% of body weight.
• Muscles are being used 24/7 so you have ti keep them in shape.
• They are classified as slow twitch and fast twitch fibers
• 215 pairs of skeletal muscles. Control circulatory and many other systems.
• Muscles contain nerves that tell brain when to move them.

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• Only skeletal muscles regain themselves
• Trials to regrow cardiac with stem cells have failed
• Heart is most important muscle to protect
• Human adult body has 650-800 muscles.

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• Muscles can only pull one direction
• Work in pairs so there is a reaction to every action
• 1lb. Of muscle is size of apple
• 1lb of fat is size of a bag of marshmallows.

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• RMR is energy required to stay alive.
• Brain, heart, liver, kidneys, and lungs contribute
• Resistance training spikes levels for up to 48 hours
• Muscles are 70% water
• Drinking water keeps muscles moving easily, dehydration causes cramps

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• Muscles shrink over time
• Aging causes sarcopenia
• Weights make muscles work harder keeping them strong
• Unused muscle will not turn to fat. Many people believe this myth.

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• Stress, poor sleep, and exhaustion mess up hormones
• Acupuncture can offset muscles causing relief.
• Skeletal muscles make up ~50% body weight.
• Skeletal Muscles attatch to bones giving body shape

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• Cardiac muscles never stop working during lifetime
• Heart never gets tired
• Smooth muscles are in hollow organs and can move food
• Elasticity goes down over time
• Muscles increases in twenties- plateaues in thirties

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